Cooking from Thomas Keller's 'Under Pressure'
"We spent roughly seven and a half hours re-creating two recipes."

Grilled Octopus Tentacles, Chorizo, Fingerling Potatoes, Marcona Almonds, and Salsa Verde.
Over the weekend, my good-humored boyfriend, Al, and I tackled two recipes from Thomas Keller's latest cookbook, Under Pressure.
This handsome book is an ode to sous vide cooking and offers instruction for its use. The book is the third collaborative effort by Keller and Michael Ruhlman, following the French Laundry and Bouchon cookbooks. We've had the pleasure of cooking through the earlier volumes and met the arrival of this new book with anticipation.
Two years ago, Al bought a laboratory-grade immersion circulator off of eBay (which he adequately sterilized, he swears). Since then, we’ve managed to clutter the kitchen with additional hardware like a more-portable immersion circulator, a FoodSaver vacuum sealer, a Vita Prep high-speed blender, three kinds of chinois, a Superbag, an electronic pressure cooker, a heat gun, an NO2 canister, a meat grinder, a meat slicer, a dehydrator, and a microgram scale. Then there’s “software” like xanthan gum, Versawhip, methocel, tapioca maltodextrin, sodium alginate/calcium gluconolactate, agar, and lecithin. We've grown progressively comfortable with technical, precise cooking.
In particular, we've fallen in love with sous vide. Truthfully, I'm a late convert to the Cult of Meat, but our sous vide preparations have made me a born-again flesheater with missionary zeal. Meat is rarely as juicy or as velveteen as it is slow-poached in a controlled bath of 55.5°C. (I confess; I also get a special thrill witnessing my doctor’s horror as my LDL-levels climb to all-time highs.)
Before the advent of Under Pressure, home-chefs undertaking the challenge of sous vide looked to information from a handful of pioneering amateurs such as Nathan Mhyrvold or Douglas Baldwin. Though their calculus is far from sexy, used as a reference, their experiments established clear and helpful guidelines for further experimentation at home.
Contrast that with Under Pressure. The book has been heralded as the definitive guide to sous vide cooking, which may be true by circumstance more than intent.
Under Pressure, as it so states, is a literal documentation of recipes found in French Laundry and Per Se, written by professional chefs for professional chefs, presuming access to professional-grade equipment. This statement is buried inconspicuously on page 38 and more forbiddingly intones: “No modifications have been made to accommodate cooks preparing [these recipes] at home.”
Fueled on defiance, Al and I were ready for the challenge. Even without the required $4,000 chamber vacuum, we would conquer all. We selected two recipes that seemed intrguing and complimentary: Grilled Octopus Tentacles, Chorizo, Fingerling Potatoes, Green Almonds, and Salsa Verde and Caramelized Fennel, Marcona Almonds, Navel Orange Confit, Caraway Seeds, and Fennel Purée.
We began cooking at 3:30 p.m. Saturday, sitting down to "dinner" 1:30 a.m. Sunday. Excluding trips to Whole Foods and Wegmans to find a "1.15 kilogram Mediterranean or Japanese octopus," we spent roughly seven and a half hours re-creating two recipes.
The meal, though tasty, wasn’t anywhere near seven hours' worth of tasty.

Caramelized Fennel, Marcona Almonds, Navel Orange Confit, Caraway Seeds, and Fennel Puree.
General Observations of the Book
1. The biggest challenge in cooking from Under Pressure is that its recipes resist compromise and restrict substitution. The techniques and choices are not always appropriate outside of the restaurant kitchen, and more problematically, choices are not fully explained. The type of curious cook who would even consider the investment of a chamber vacuum is sure to wonder about the rationale behind preferred cooking times and temperatures.
2. Keller's recipes don't scale well for home-cooking and we direct this criticism specifically toward its sauces and purées. The effort toasting, grinding, rinsing, draining, chopping, blending, straining, and re-straining yields so little reward. All this effort for a 200-gram mash.
3. The gauzy macros, shot axonometrically, do little to clear the mystery of how to plate a dish. This would be a minor quibble with most cookbooks, but is a major one with Under Presssure. Photographs depicting the proportions of the many components of a recipe would be helpful. But the book's food porn, lush as it is, is more useful as inspiration than illustration.
4. The book is written with exacting detail but is sometimes not specific at all. Though we were instructed on how much cumin seed to use, down to the Nth milligram, we were given no indication whether the plated dish was to be served hot, cold, or whenever we got around to eating it. In general, the recipes also fail to define the desired volume or thickness of ingredients, which is particularly important for sous vide.
5. Though the recipes are not written or laid out with the same modularity as they are in the similarly beautiful Alinea cookbook, it does appear possible to break down a recipe by its components and tackle them at will. Grilled Octopus Tentacles, Chorizo, Fingerling Potatoes, Green Almonds, and Salsa Verde is not a recipe we’ll undertake in its entirety again, but we’ll certainly use sous vide to tenderize octopus in the future. Some Keller preparations are sensible undertakings. Combined with certain shortcuts, they can yield equally delicious results.
6. There is a danger in cooking a Keller recipe by cherry-picked components, however. Keller’s components are often overcharacterized by a single flavor. The component may seem overpowering eaten on its own but is balanced when the dish is eaten as a whole. As an example, the fingerling potatoes eaten alone tasted terribly medicinal. They were dominated by the taste of bay leaf. But after the plate was assembled, and after we took care to spear each forkful with potato, chorizo, octopus, almond, and a wet swab of purée, we finally understood what we were meant to taste—the nano version of four Spanish tapas.
What Keller and Ruhlman have really done is document recipes from the recent French Laundry–Per Se corpus. As a French Laundry II or a Per Se Paint-by-Numbers, the book succeeds. There is pleasure in reading, cooking, and eating from it. However, as a practical guide to sous vide cookery, Under Pressure doesn't quite meet the mark. It struggles to generalize the specifics of the recipes into broad sous vide principles. Moreover, the reader is easily lost in the minutiae of its preparations.
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21 Comments:
No judgement here Tam, but, how much did all the equipment cost? and how big is your kitchen?
sailordave at 11:25AM on 12/11/08
Takes me back to algebra, chemistry and physics nightmares. Can you hear my head spinning? I'll stick to cook by number with lots of pretty pictures, but I appreciate your effort and enjoyed reading about it, especially that I don't need the cookbook or all of that expensive and space consuming equipment. Hope you had fun!
PerkyMac at 11:33AM on 12/11/08
that's quite an undertaking-well done. i'm fascinated by your kitchen description too. cookbooks really seem to be getting ultra elaborate these days, don't they? tomes really.
gastronomeg at 11:50AM on 12/11/08
wow.
this is an awesome post.
one of the best reviews of the book I have read.
intheyearofthepig at 11:50AM on 12/11/08
Did you guys know there's a war on?
Barry Foy at 12:06PM on 12/11/08
My first thought, when I saw the book and the title, was that non-cooks are going to see this beautiful cover and buy the book for their cooking friends who have pressure cookers.
My second thought was wondering who would have an immersion circulator at home, along with the rest of what might be required, in order to do a review of the recipes. I guess that question has been answered.
dbcurrie at 12:20PM on 12/11/08
I would NEVER do this, but thank you so much for the post. Totally fascinating.
jlbrach at 12:24PM on 12/11/08
Nice review. I have the book, and I agree. This is anything but the "definitive" guide to sous vide. Aside from the unhelpful opacity of the given recipes, there is nearly zero general information on the subject; no temperature-time charts, no lists of ingredients and how to cook them sous-vide. The best guide out there remains Douglas Baldwin's free pdf; here's hoping he has a book contract in the works.
@ dbcurrie, et al: FYI, One can do perfect sous-vide at home with a $30 rice cooker, a $100 FoodSaver vac sealer, and a $120 PID (from Auberins), so it is, while still somewhat costly at first, hardly out of reach to the home cook.
dikaryon at 12:38PM on 12/11/08
I'm not entirely sure because I haven't read the book, but it sounds like a certain amount of innate knowledge is expected to pull off these recipes.
I know from experience when cooking sous vide that if your ingredients are not absolutely pristine the flaws in them will become exaggerated during the cooking process.
Restaurants utilizing sous vide invest huge amounts of time procuring the absolute best ingredients possible. I am not sure that cooking grocery store ingredients in this manner will yield anything close to the same final dish as was intended.
Cook a horse carrot sous vide with a little sugar, salt and butter. Then cook a mokum carrot from your farmer's market in the same manner, and you will see the difference.
NCthenNY at 12:46PM on 12/11/08
@dikaryon, what's a PID? I've got the other two.
dbcurrie at 1:06PM on 12/11/08
@dbcurrie: http://en.wikipedia.org/wiki/PID_controller
Adam Kuban at 1:18PM on 12/11/08
Thanks Adam. I guess I've got the manual version, AKA, me turning down the gas flame under the pot of water to keep the temp constant.
dbcurrie at 1:32PM on 12/11/08
Thanks for exploring this. I have minimal knowledge of sous vide, so I learned something today :)
Kerosena at 1:47PM on 12/11/08
I've always wanted to try sous vide but no one gives me a straight answer about cooking in plastic. Is it safe?
Veron at 1:49PM on 12/11/08
Veron, it depends what kind of plastic you're using. There are thousands of different kinds of plastic, and most of them are not designed for food use. Of the ones that are, most are designed to handle specific conditions. Ziploc bags, for instance, are perfectly safe for storing foods, but are not designed to be heated. Many people do ghetto sous vide at home in ziploc bags or in plastic wrap and it's a very very bad idea. The more heat the worse it is, and especially if you are applying heat for long periods of time. Also, if you're simply throwing the bag into a pot of water, the bottom of which is sitting over a burner, the bag where it contacts the metal is at a much higher temp than the rest of the water. You should be using a double boiler or a trivet inside the pan to keep the plastic off the heat source. Cooking in plastic bags should be done specifically in ones that were designed for that purpose. This is not a cooking technique that should be done with cheap and inappropriate materials. It's kind of one of those "don't try this at home unless you are a trained professional" kind of things. There is also a risk of bacterial contamination if the bags are not sealed properly and for certain recipes the cooking temperatures are not high enough to kill them. So in short, sous vide is awesome, but it's very advanced and expensive and not to be taken lightly.
simon at 3:46PM on 12/11/08
@Tam:
"In general, the recipes also fail to define the desired volume or thickness of ingredients, which is particularly important for sous vide."
Actually, sous-vide is the one form of cooking where volume and thickness matter the least. That's the beauty of sous-vide. Since in most cases, you're cooking food in a water bath at the temperature that you want to cook the food to (IE, take a steak to an internal temperature of 125 degrees by cooking it in a 125 degree water bath), it's impossible to overcook. You can cook the world's thickest steak to an internal temperature of 125 degrees, and the outer layers will also be at 125 degrees, vs. any other cooking method, where by the time the center reaches 125, the exterior is overcooked. Additionally, you can leave it in there as long as you want after it's come ti 125, and it won't ever overcook.
GoodEaterKenji at 4:18PM on 12/11/08
@GoodEaterKenji:
The issue is that in a lot of cases (almost all the fish recipes, and some of the red meat), the recipes in Under Pressure give cooking temperatures higher than what I would assume is the desired core temp, and so the thickness makes a big difference.
@dbcurrie:
This is the PID solution that dikaryon is referring to.
alwang at 6:21PM on 12/11/08
I cannot believe you. I simply cannot believe you. You are AMAZING Tam and Tam's Man (Al)!
I just had a heart attack after reading this one (in part, because of your admission of becoming a meat whore), but mostly because you made that grilled octopus from Thomas Keller's Under Pressure.
passionateeater at 4:51PM on 12/12/08
@PerkyMac, intheyearofthepig, jlbrach, Kerosena, dikaryon: Thanks for the kind words. Cooking with sous vide does bring to mind those halcyon days of chem lab practicals ;).
@ gastronomeg: Indeed! Alinea, The Big Fat Duck Cookbook, and Under Pressure seem to be competing for the same readership. These are all beautiful, expensive, and almost impenetrable books.
@sailordave: We do our more ambitious entertaining at Al's. The kitchen is roughly 100 square feet. We have a length of 6 feet of usable counter space and a folding table set up for appliance-spillover. The immersion circulator sits on top of the folding table; the FoodSaver sits on top of the microwave which sits on top of the folding table. The Vita-Prep is on the floor more often than not. A tight squeeze for sure but it could be worse ... We could be cooking from my kitchen!
The breakdown of big-ticket equipment used in these recipes is roughly:
Immersion circulator ($300 from eBay)
FoodSaver (more recently priced around $100)
Vita-Prep (roughly $500-600)
Groceries ran about $40-60 (the buffer is for the cooking alcohol). Items on the shopping list included octopus, almonds, navel oranges, fennel, fingerling potatoes, basil, bay leaves, rosemary, tarragon, thyme, cilantro, baby watercress, flat leaf parsley, Spanish chorizo, and Pernod. We subbed 2.5 pounds of baby octopus for the Mediterranean/Japanese octopus, and subbed Marcona for green almonds (the latter are only in season in spring).
@dikaryon: The PID type of device you mention is what we use when the larger immersion circulator is in use. For this write-up, we used it to poach fennel. It doesn't actually circulate water in the bath and you can only sous vide items as large as the capacity of your cooking vessel (e.g., rice cooker, crock pot, etc.). It is a reasonable alternative though, especially for people looking to try it all out. We've managed to produce pretty good seafood dishes with it.
@Veron, simon: Noted food scientist Harold McGee discusses the safety of cooking with various plastics on Ruhlman's own post of 'Under Pressure': tests show standard cling film, Saran wrap, and commercial wraps in general aren't likely to release chemicals into foods.
@NCthenNY: You've brought up an interesting point. Very little seasoning is required in sous vide cooking and a little spicing goes a long way. With groceries from the local Wegmans, we've surprised ourselves by cooking dishes rivalling what we've had at some well-regarded restaurants. Though I'm not sure ingredients need to be quite so pristine, flavors are improved with the use of fresh and seasonal ingredients.
@dbcurrie: I like your sense of adventure.
@alwang: Hallo, Handsome.
@passionateeater: Hello, fellow Meat Whore!
@GoodEaterKenji: As Al mentioned, we've learned to be more attentive to thickness, time, and temperature when cooking delicately textured items like seafood. I can't tell you how many dinners through which we've suffered, gnawing on cottony, over-poached fish ...
Tam Ngo at 2:22PM on 12/15/08
Tam, using standard polyethylene plastic bags is dangerous if you approach the temperature at which the plastic melts, which is 195F. The safety of polyethylene plastic use, whether heated or not, is still highly hotly debated. And people have contacted ZIPLOC to ask them, and maybe it's just a CYA response from their lawyers, but they DO NOT recommend using their bags to cook anything at a temperature approaching the softening point of the plastic.
As I said in my comment, if you are heating your water bath on the stove top, the bottom of your stock pot will be much hotter than the water itself above it because that's the place where the metal is being heated by the flame. Just so you know, the temperature of a natural gas flame from a typical stove is about 1900F. If your plastic bag is sitting on the bottom of your pot, you will definitely be running the risk of melting the bag or at least softening the bag, possibly contaminating your food. Use a trivet inside the stock pot to act as a heatsink. Temperatures well below boiling and keeping the bag away from the heating element, whatever it may be, should be ok...
Also, it is a very bad idea to use immersion circulators that were not designed for food use, an even worse idea to use one that was previously used in a lab, especially if you don't know what they were using it for. Here is a good explanation of why.
Is the experience of cooking sous vide so important that you are willing to take stupid risks by using the wrong equipment? I'm fascinated by it, but I sure as hell am not going to buy some random machine off ebay, and cook in an off the shelf baggie that was not designed to do what I'm asking of it. It's kind of like having sex with a prostitute and using an expired condom, if you ask me. Sure, I may have the time of my life, but the risks just ain't worth it. To me. What you do with and put into your body is entirely up to you.
simon at 6:53PM on 12/15/08
Hi Simon,
If what you're trying to say is that sous vide should not be done without a thorough understanding of the principles and the risks, I couldn't agree with you more. I would encourage anyone looking to explore this method to do the appropriate research, and to feel comfortable in their own understanding of what makes various aspects of sous vide safe or unsafe. I've done that due diligence, and it's helped me make decisions on when a particular piece of equipment might be inappropriate, and when it should be fine.
That said, you rightly point out that there are still risks associated with this activity. Anyone interested in sous vide needs to come to a personal decision on whether it's worth those risks, just as you need to make that decision on just about any other activity worth doing, whether it's driving a car, eating a rare steak, or indeed, having sex. For the record, I've reached the same decision on all four of those activities.
alwang at 6:27PM on 12/16/08