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Mussels are perhaps not everyone's first choice for a quick weeknight supper, but that assessment deserves to be challenged. (Kenji even referred to them as "the easiest choose-your-own-adventure, one-pot meal around"!) They cook quickly and excel in simple recipes like this one. Most people have probably made a variation on moules à la provençale (mussels in a garlic-tomato sauce) or moules marinières (with white wine and butter). Today we're using a Thai-style red curry paste and a quick vegetable sauté to create a bold, spicy broth that pairs perfectly with briny mussels. Add some easy rice stick noodles and you've got a complete meal on your hands in 20 minutes or less.
Here in the northeastern US, one of the best varieties of mussel hails from Prince Edward Island, just off Nova Scotia in Canada. Like most mussels available in North America, they are farmed rather than caught in the wild, which, according to Seafood Watch, makes them one of the most sustainably produced seafoods you can buy. As with any seafood, you do need to find a supplier that you trust to provide you with fresh, high-quality product. A good retailer will let you do the sniff test—like other fresh fish, fresh mussels should have only a faint odor. You should, of course, keep them cold, but not frozen, and cook them within a day or two—our preference is to set them in the fridge over ice, or underneath a zipper-lock bag packed with ice. If they're in a plastic bag, make sure to keep it open for air.
Because they steam very quickly, you should prep them and keep them in the fridge while you get your noodles ready and prepare your base sauce. You may not need to do much work at all to clean the mussels—a light scrub might be required, and you'll want to pull out any beards you see (this may not be too much of a problem with farmed mussels). Tap any mussels that are ajar to see if they can be coaxed closed; if not, they should be discarded. (You can get more details about buying, storing, and cleaning mussels here.)
Once they're back on ice, make the noodles. We chose thin rice vermicelli for this recipe—they cook through quickly just by sitting in hot water while you make the rest of the dish, and you won't need to use the stove. Of course, you can warm up a baguette if you'd prefer bread to mop up the broth, but the noodles seem like a more natural pairing for the Southeast Asian flavors we're using here.
The only real work you'll have to do is construct the curry broth. To start, we heat up some oil in a skillet and sauté some garlic and shallots before adding a dollop of red curry paste. You can typically find curry paste in canned or jarred form in your grocery store, or you can order it online. Different pastes can provide more or less spicy heat and salt, so if you're trying a new paste, it's wise to start with one or two tablespoons, taste, then add more if you like.
Once the curry paste has bloomed in the oil (this helps develop its flavor), we hit it with a splash of alcohol. Adding a Western booze like wine or beer may sound strange for a curry-flavored broth, but we love the flavor it brings. We've tried both white wine and beer in this recipe—you're not adding enough to make a huge difference in the flavor either way, so feel free to experiment, and you probably can't go too wrong; whatever you have open will work. If using beer, try a lager or ale, but avoid anything too heavy, like a porter or stout. For wine, a dry white is what you want, and don't worry about breaking the bank. Anything you'd drink with dinner will work in the dish.
Next, we add coconut milk, fish sauce, lime juice, and a little sugar to balance out the heat of the curry paste. Then we add the mussels and cover the pot—they should open up within a few minutes, with just a couple of stirs now and then. By the way, you can ignore the old tip of discarding unopened clams or mussels: Studies have shown that they are perfectly safe to pry open and eat.
Finally, we stir in some cilantro and basil, adding them at the last minute so that their flavors stay bright and fresh. If cilantro's not your thing, any mix of fresh soft herbs would be great. Parsley and mint are good options.
Scoop the mussels and broth over noodles in individual bowls, and make sure you serve them with an empty bowl for the discarded shells!
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