The Food Lab: The Importance of Resting Meat
It's time for another round of The Food Lab. Got a suggestion for an upcoming topic? Email Kenji here, and he'll do his best to answer your queries in a future post.

[Photographs: J. Kenji Lopez-Alt]
Pan-seared Steaks with Red Wine Pan Sauce
Want to see resting in action?
Here's the recipe »
Instructions on how to be a man: Start large fire. Cook large steaks over large fire. Rip steaks from fire with bare hands, bite down, and allow succulent juices to dribble down chin.
Instructions on how to be a smart man: Start large fire. Cook large steaks over large fire. Rip steaks from fire with bare hands, allow steaks to rest in a warm place undisturbed for 10 minutes. Bite down, and allow succulent juices to dribble down throat.
This week at The Food Lab, we're going to explore the importance of resting meat. Asides from over/under-cooking/seasoning, not resting meat properly is probably the cooking blunder that we are all most guilty of.
You mean I have to wait before I can tuck into that perfectly charred ribeye? Unfortunately, yes.
Here's why:

This is a picture of a steak that was cooked in a skillet to medium rare (an internal temperature of 125°F or 51.7°C). The steak was then immediately placed on a cutting board and sliced in half, whereupon a deluge of juices started flooding out and onto the board.
The result? Steak that is less than optimally juicy and flavorful. This tragedy can be easily avoided by allowing your steak to rest before slicing.
I've always been told that this happens because as one surface of the meat hits the hot pan (or grill), the juices in that surface are forced away towards the center, increasing the concentration of moisture in the middle of the steak. Once the steak gets flipped over, the same thing happens on the other side. The center of the steak becomes supersaturated with liquid—there's more liquid in there than it can hold on to—so when you slice it open, all that extra liquid pours out. By resting the steaks, you allow all that liquid that was forced out of the edges and into the center time to migrate back out to the edges.
Sort of makes sense, right? Imagine a steak as a big bundle of straws, each straw filled with liquid, and representing the muscle fibers. As the meat cooks, these straws start to change shape, becoming narrower, and putting pressure on the liquid inside. Since the meat cooks from the outside in, the straws are pinched most tightly at their edges, and slightly less tightly in their center. So far so good. Logically, if the edges are pinched more tightly than the center, liquid should get forced towards the middle, right?
Well here's the problem: water is not compressible. In other words, if you have a two-liter bottle filled to the brim with water, it is (nearly) physically impossible to force more water into that bottle without changing the size of that bottle. Same thing with a steak.
Unless we are somehow stretching the centers of the muscle fibers to make them physically wider, there is no way to force more liquid into them. You can easily prove that the muscle fibers are not getting wider by measuring the circumference around the center of a raw steak vs. a cooked one. If liquid were being forced into the center, the circumference should grow. It doesn't—it may appear to bulge, but that is only because the edges shrink, giving the illusion of a wider center.
In fact, the exact opposite is the case. Since the center of a medium-rare steak comes up to 125°F, it too is shrinking, and forcing liquid out. Where does all that liquid go?
The only place it can: out of the end of the straws—or, the surface of the steak. That sizzling noise you hear as a steak cooks? That's the sound of moisture escaping and evaporating*.
* There are ways to minimize the shrinkage of muscle fibers, thus minimizing moisture loss, but that topic will be covered in a future Food Lab installment.
Give That Theory a Rest
So why does an un-rested steak expel more juices than a rested one? Turns out that it all has to do with temperature.
We already know that the width of the muscle fibers is directly related to the temperature to which it is cooked, and to a degree, this change in shape is irreversible. A piece of meat that is cooked to 180°F (82.2°C) will never be able to hold on to as much liquid as it could in its raw state. But once that meat has cooled slightly, its structure relaxes—the muscle fibers widen up slightly again, and it's this small change in shape that makes all the difference.
This image shows six steaks of identical thickness that were all cooked to an internal temperature of 125°F. I sliced one steak open every 2.5 minutes and placed it on a plate to collect any juices that leaked out.

Here's what's going on:
- After No Resting: The meat around the exterior of the steak (the parts that were closest to the pan) are well over 200°F (93.3°C). At this temperature range, they are pinched tightly shut, preventing them from holding on to any moisture. The center of the steak is at 125°F. While it can hold on to some of its juices at this temperature, cutting the meat fibers open is like slitting the side of a soda bottle: some juice might stay in there (mostly through surface tension), but liquid is going to spill.
- After 5 Minutes of Resting: The outermost layers of meat are down to around 145°F (62.8°C) and the center of the steak is still at 125°F. At this stage, the muscle fibers have relaxed a bit, stretching open a little wider. This stretching motion creates a pressure differential between the center of the muscle fiber and the ends, pulling some of the liquid out from the middle towards the edges. As a result, there is less liquid in the center of the steak. Cut it open now, and some of the liquid will still spill out, but far less than before.
- After 10 Minutes of Resting: The edges of the steak have cooled all the way down to around 125°F, allowing them to suck up even more liquid from the center of the steak. What's more, the center of the steak has by this time cooled down to around 120°F, causing it to widen slightly. Cut the meat open at this stage, and the liquid will be so evenly and thinly distributed throughout the steak that surface tension is enough to keep it from spilling out on the plate.

In the steak on the left, all those delicious succulent juices are all over the plate. In the steak on the right, everything stays inside, right where it belongs.
But wait a minute—how do we know that those juices really are staying inside the rested steaks? Is it not possible that in the ten minutes that I've allowed it to rest that the liquid hasn't simply evaporated, leaving me with a steak that is equally un-moist?
To prove this is not the case, all you need to do is weigh the steaks before and after cooking. Aside from a minimal amount of weight loss due to rendered fat, the vast majority of weight loss comes from juices that are forced out of the meat.

The steak loses around 13 percent of its weight just during cooking. Cut it open immediately, and you lose an additional nine percent. But allow it to rest, and you can minimize this weight loss down to around an additional two percent.
Larger Meats
So that's all well and good for steaks, but what about for larger cuts of meat, say a whole roasted pork loin, or a prime rib? Well, the same principles apply here too. the main difference is they need to rest for longer. How long? Well there are various rules of thumb: five minutes per inch of thickness, ten minutes per pound, half of the total cooking time, etc.
By far the easiest and most foolproof way to test if your meat has rested long enough is the same way you can tell if your meat is cooked properly: with a thermometer.

Ideally, no matter how well-done you've cooked your meat, you want to allow it to cool down until the very center has reached 120°F (49°C). At this stage, the muscle fibers have relaxed enough that you should have no problem with losing juices. As shown in the graph, In a 1.5-inch-thick steak, this translates to around 10 minutes. For a prime rib, this may take as long as 45 minutes.
Congratulations: Your meat is now seven percent more delicious!
Continue here for Pan-seared Steaks with Red Wine Pan Sauce »
About the author: After graduating from MIT, J. Kenji Lopez-Alt spent many years as a chef, recipe developer, writer, and editor in Boston. He now lives in New York with his wife, where he runs a private chef business, KA Cuisine, and co-writes the blog GoodEater.org about sustainable food enjoyment.
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41 Comments:
Now I'm hungry :(
RookieCAF at 9:07AM on 12/04/09
EXCELLENT ARTICLE!
peekpoke at 9:22AM on 12/04/09
Wonderful. Thanks.
funkopolis at 9:35AM on 12/04/09
sending this to my non-foodie, impatient, meat cutting husband right now!
nalega at 9:41AM on 12/04/09
What if i still want to eat my steak hot though?
berbuck at 9:42AM on 12/04/09
Kenji, have you heard about denaturing the meat at room temperature with a dry salt cure 30-45 minutes before cooking? The process turns a tough, choice piece of meat into a tender, prime cut that melts in your mouth. This only works with Rib-eye, T-bone, New York Strip, Porterhouse or other very thick cuts. The idea is to rub 1-2 teaspoons of kosher salt on each side of the steak and let it rest. Ten minutes through, the liquid is expelled from the steak onto the plate that's holding it, but then something magical happens! All of that juice with some of the salt is sucked back into the center of the steak, thus seasoning it perfectly from the inside.
Of course, you won't be eating all of that salt. Just before cooking, you should rinse off the salt with cold water then pat the steak completely dry. Rub it with some oil and season with black pepper. Cook as desired and wait 5 minutes before cutting. 10 minutes seems a little long to wait, and we don't wait this long in restuarants before we carve our beef or venison.
Try the salt method. It really yields perfection in a steak (especially if you add garlic, herbs, lemon zest to the salt cure). The steak can be finished with herb-butter too!
ChefR0bert at 9:44AM on 12/04/09
Okay, I have not until now seen a reasonably scientific explanation for why meat should rest. Being a science geek myself, I don't tend to be persuaded to change my ways easily. But I'm persuaded.
Lorenzo at 9:59AM on 12/04/09
@ ChefRObert
Yes - salting is great! I wouldn't go so far as to say it can turn a choice steak tender, but it certainly helps it retain more moisture and become a litle more tender around the edges.
When I was at Cook's, I did some pretty extensive testing on salting different cuts of meat for various periods of time. The videographer and I actually put together a short timelapse video of a salted steak in which we took a still every minute over the course of an hour to show the steak expelling then re-absorbing the water.
It workse essentially like a brine. First, the salt draws liquid out of the meat through osmosis, at which point it dissolves in the liquid that is expelled, forming a brine. This brine then starts to work on the meat proteins, dissolving them and making them capable of retaining more moisture, just like in a normal liquid brine. Since the meat can hold more moisture, it then re-absorbs the liquid that was exuded, along with some of the salt.
The process takes at least 45 minutes or so, so you have to be sure that all the liquid was re-absorbed before you start cooking the steaks.
I often salt steaks overnight in the fridge (which is actually what I did with the ones in the photos above).
Thanks!
I'm not sure if you need a subscription, but here's a link to that Cook's Illustrated video: http://www.cooksillustrated.com/video/default.asp?newVideo=y&docid=10808
J. Kenji Lopez-Alt at 10:56AM on 12/04/09
But it does work! This is the only way I prepare steak. The denaturing process that the meat goes through (if done correctly) tenderizes the meat beyond belief. A standar 3/4-inch to 1-inch steak might take 30-45 minutes, but huge 1-1/2-inch steaks can take 45-60 minutes.
In my humble opinion, it works better than a brine. More salt contact with the meat's surface with more concentrated absorption of flavor. I wouldn't brine a steak by submerging it in saltwater as this can bring too much water inside the steak, which later has to be seared. You want to retain the natural juices and flavor, not introduce new liquid to the steak.
Thanks for the video. I use more salt and on both sides. I also rest the meat on a flat surface so the liquid can be re-absorbed instead of draining to the rack.
Take care!
ChefR0bert at 11:21AM on 12/04/09
Kenji, you rock. I love reading these articles, they're always so interesting and informative!
LizLemon at 11:36AM on 12/04/09
@J. Kenji Lopez-Alt, what LizLemon said.
I particularly enjoyed the science behind internal temps when resting.
I always make a point to "tent" my meats; this wont' change!
hungrychristel at 11:48AM on 12/04/09
You write my favorite articles on the site, I HAVE to read every single one.
I have a friend who doesn't know ANYTHING about cooking and he always made fun of me when I let my steak rest and always thought his well done steaks were "perfect" and "medium rare". *facepalm*
SteadyRollins at 12:29PM on 12/04/09
Nice article! Great way to explain it.
drsbbq at 12:57PM on 12/04/09
Great information! Much obliged.
Foodie,foodie! at 1:02PM on 12/04/09
great article, although I'm sorry to hear you're not at Cook's any more, as I always enjoyed your articles there.
pcsanwald at 1:38PM on 12/04/09
@pcsanwald
I'm still a contributing editor at Cook's, so I'll generally have one recipe/story per issue, and have a hand in editing some of the other stories.
J. Kenji Lopez-Alt at 1:42PM on 12/04/09
Great article, thanks!
Growing up, my father insisted that meat be sliced right off the grill/stove and that pies be served right out of the oven. We ate a lot of dry meat and runny pies!
As an adult I've come to appreciate that good things come to those who wait...
rheogs at 2:04PM on 12/04/09
Good call pcsanwald, I also really love Kenji's stuff on CI. In fact, I recently wanted to use the vodka pie crust recipe from CI, but I don't own a big enough food processor and I was hesitant to make it by hand. I'm pretty sure that it was Kenji himself on an informational video on CI that saved me the night before Thanksgiving, telling me how to adapt the recipe to make it in my Kitchenaid mixer. The crust turned out spectacular. I think a lot of us would be happy members of a J. Kenji Lopez-Alt fan club. Keep up the good work, and thank you!
LizLemon at 3:16PM on 12/04/09
@ LizLemon
Thanks! That means a lot to me, and I'm so glad that the pie crust worked out for you!
J. Kenji Lopez-Alt at 3:20PM on 12/04/09
@berbuck
120 degrees only 5 degrees lower than a rare/medium-rare steak, so it's still hot enough to steam when you slice it open. If you like your meats hotter and more well done, you end up driving more juices out of them in the cooking process anyway, so you don't need to allow them to come all the way back down to 120. A rule of thumb is to allow the meat to rest down to 5 degrees below the final temperature you cooked it to.
So if you like a very well-done 150 degree steak, allow it to rest to 145, and it won't lose any more of the (little) juices that are left.
J. Kenji Lopez-Alt at 3:51PM on 12/04/09
Fascinating stuff Kenji. I have a few questions. When you say rest it in a warm place, what do you mean? Is a 70 degree room warm enough or should it go in an oven at a low temperature?
More importantly, taste and texture wise, was there really a difference between the steaks once they had rested more than a couple of minutes? I've been pretty happy with my steaks after a couple of minutes of resting. The steaks are juicy and hot and the little bit of juice that comes out is perfect for dipping vegetables or bread in.
Finally, how do you think your rules on resting would change for those who cook rare steaks and those who cook to medium or more?
Daniel Zemans at 6:10PM on 12/04/09
@Daniel Zemans
It doesn't need to go in the oven. In the kitchen on a board covered in foil is fine, as long as your kitchen is kind of warm room temperature. Above your stove if your stove has pilot lights works too. I'd say you're just looking for 70 degrees or a little above.
Ideally, uncovered at 120 degrees would be perfect, since that's the target final temp for your steaks, but mos tpeople don't have a way to ensure that constant temp, unless you've got a really great convection oven that doesn't cycle on and off.
As you can see on the graph, the biggest advantages occur at the beginning. Resting it for the initial 5 minutes gives you much greater results than the next five minutes, and so on, so make your call. Even after 5 minutes, you're saving around 6% of the juices. Rest it for ten minutes, and you save an additional 1%. Is waiting that extra give worth it for you? Probably not, because as you say, you like dipping your veg in that juice any way. There's no reason to ever change something that has worked for you and you've enjoyed in the past.
Finally, I think I briefly answered this in the previous comment. Look up.
J. Kenji Lopez-Alt at 1:04PM on 12/05/09
Hey, Kenji. Very interesting stuff.
I have a question though. Iacknowledge that a steak that is rested retains more juices (and I do this) but at the same time I like eating my steak hot rather than the kind of lukewarm that resting results in.
Do you have any suggestion for a way to quickly heat the steak after it has rested? Like popping it back in a 500 degree oven for a minute or something like that?
I just enjoy food that is hotter versus closer to lukewarm...
Thanks in advance!
film_score at 3:40PM on 12/05/09
@film_score
See my response to @berbeck a few posts up.
By letting it rest, the meat does not really cool down that much - it is only 5 degrees lower in temperature than it was when you pulled it out of the oven. Sure you can heat it up again, but that will cause the muscle fibers to once again contract, returning it to the state it was in right when you pulled it out of the oven. I'm afraid that hotter = more-well-done = less-juicy, no matter how you slice it...
J. Kenji Lopez-Alt at 4:05PM on 12/05/09
Interesting stuff. Here's a query - it seems to me that at places like Peter Luger, the steak is served sizzling hot straight off the salamander... and of course their steaks are pretty close to perfect most of the time, in both juiciness and flavor.
I wonder whether they rest the meat and then resizzle on hot plates (the plates are insanely hot)?
patrickamory at 4:28PM on 12/05/09
@patrickamory
Having not been to luger's recently, I can't say for sure, but I'd guess that it's the latter. They serve them sizzling more for effect than for perfection.
It's also possible that their steaks are so fatty and well-aged that even without resting they are better than anything you can get in the supermarket. I wouldn't be surprised if that were the case.
Plus, those things are massive, so by the time you get through the first few bites, the rest of the steak will have rested enough anyway, so maybe it only affects the very beginning.
J. Kenji Lopez-Alt at 4:37PM on 12/05/09
Since I often make a roast (say a tri-tip on the grill) with a probe thermometer inserted the whole time, the 5-degree heuristic is perfect. I can simply note the temperature when I remove the roast from the grill, then carry the whole thing inside and wait for a 5-degree drop. While I've been resting meat for several years (probably since I started watching ATK and getting CI), it never quite occurred to me that very large roasts would need so much longer to rest. Thanks for an incredibly informative article!
dprice at 8:38PM on 12/05/09
Excellent - well-researched + methodical + data-based = delicious. Now that I'm armed with this knowledge perhaps I won't be so afraid of screwing up steak and cook it at home.
firni at 10:44PM on 12/05/09
I was surprised to see no mention of carry over cooking. Don't internal meat temps actually continue to rise as much as 5 to 10 degrees after being removed from the heat source?
I recall reading another article on resting meat in which two prime ribs were roasted to 125 degrees F. One was sliced in half immediately after removing from the oven, revealing a quarter sized circle of rare meat surrounded by what appeared to be well done. The other roast was allowed to rest for 25 minutes or so and when that roast was sliced the meat looked to be a perfect medium rare from center to the outer edges. From then on I was sold on resting before cutting.
Great article! Thanks.
northwoodschef at 8:59AM on 12/06/09
@dprice
as @northwoodschef said, for larger cuts of meat, there will be carryover cooking, so with a cut like a tritip, the very center will probably rise 3-5 degrees after you pull it off the grill, while a prime rib could rise as much as 7-10 degrees. The 5-degree rule of thumb still works - you want the final temp before slicing to be 5-degrees below the finished cooking temp.
So, if you pull of a prime rib at 120 degrees and it rises to 130 degrees, let it cool back down to 125 before slicing. For large roasts, this can take as long as half an hour or so - which is luckily just as much time as you need to roast the vegetables you're going to serve it with :)
J. Kenji Lopez-Alt at 1:07PM on 12/06/09
Every time I see a post by J. Kenji Lopez-Alt, I know it's going to be amazing.
ReneeRobinson at 2:00PM on 12/06/09
I enjoyed reading your article, I like the salt-for-45-minutes before cooking idea, I'll try that next time.
I have one question about the pictures - When meat is resting, it tends to exude a fair bit of juice just sitting there. The difference in the pictures is dramatic, but was there much juice left on the cutting board where the 10-minute steak rested before moving it to the plate?
Not questioning the resting technique, I've used it for ages and I cook at a nice restaurant where we rest every piece of meat that comes off the grill. Also the difference in weight loss percent says a lot. I was just curious about the pics.
WhatsCookin at 2:47PM on 12/06/09
@WhatsCookin
Good question.
All the steaks were first blotted on a plate lined with paper towels to remove excess fat from the pan before I weighed them (prior to the rest). Every one of them had lost pretty close to around 13% of their pre-cook weight at that point. I then transferred them to the cutting board and lightly tented them, pulling them at 2.5 minute intervals onto the plates, where I sliced them (and collected the juices).
On the board, there wasn't much juice leftover from any of the steaks. A little puddle under each one, but not enough to drip around or pool up - you don't see the juices until you actually lift the steak.
The steaks that were rested 10 minutes or longer still ended up losing 2% more moisture than they had lost when I initially pulled them out of the pan, so that can be attributed to both the puddle under the meat, and moisture loss due to evaporation.
So, short answer: there's juice left on the board after resting the meat, but it's not much compared to what you lose when not resting the meat.
J. Kenji Lopez-Alt at 3:06PM on 12/06/09
Now we have concrete data on resting the meat! Now we can rest easy. This can also fuel the argument against searing to seal in the juices. This will go into my 'important' file. Thanks for the info.
imaminta at 11:56AM on 12/07/09
oh the science nerd in me loves the experimental take on letting meat rest!
Charise at 3:26PM on 12/09/09
Kenji, you're correct about steakhouse steaks--besides the inherent difference between grades "prime" and "choice," diners are counted on to let their steaks rest naturally while they're doctoring up the baked potato, slathering the bread with butter, sprinkling salt, grinding pepper and pouring the A1 before making the first cut.
I got lucky and found a nice 1-1/2" slab o' choice sirloin at the grocery store. I wish I could have grilled it, but I don't have much luck with the Weber when it's this bitterly cold so I pan-fried it. I served my grandkids right away and the steak looked like it sprung a leak. By the time they were seated and happily eating, I was able to slice the adult portions without the steak bleeding to death on the board.
Now, if you could only work your science on "select" grade meat to make it palatable and juicy, I'd be happy to do your grunt work forever.
betteirene at 3:46AM on 12/13/09
Thank you thank you THANK YOU! I'm showing this to my husband. Maybe then he will understand why I've always bugged him to leave the meat ALONE for a few minutes (although I've had the science wrong all along, my heart was in the right place)!! This article will put an end to our constant steakfights.
missbhavens at 10:31AM on 12/14/09
Great post thx. Did I miss it or does it state somewhere how you kept the steaks warm? I like my steaks very thin and flash fried, verry tender ;-)
Berte at 2:55AM on 02/04/10
Resting makes a world of difference on a grilled chicken breast too. Pretty much applies to all meat that you cook. Thanks for the great article!
stevek at 11:45AM on 03/06/10
Beginner here. I tried this with a burger pulled off the heat at 150 but after letting it get down to 120 it wasn't warm enough so ended up having to microwave it a bit. I understand letting the meat rest but I'm wondering if down to 120 is too long for a burger?
cg1 at 9:48PM on 03/20/10
Ooops, reading comments, I see the five degree rule, so pulling at 150 it rose to 160 and I should have let it set until reading 155.
cg1 at 10:20PM on 03/20/10