The Fanciest Thing You Can Make With Zero Technique
En papillote means “in parchment” and it is the single most forgiving way to cook fish. You build a little pouch, seal it, and slide it into the oven. The fish steams in its own juices plus whatever aromatics you tucked in alongside it — so it essentially cannot dry out. No flipping, fish spatula anxiety, no guessing when to move it off the heat.
What comes out is genuinely stunning. Black cod (sablefish) is one of the fattiest fish in the sea, and steaming lets that fat do its thing: the flesh turns custardy and translucent, flaking into big, glossy petals under almost no pressure. The veggies you include are endlessly customizable, but it’s the pan juices that are the whole point. Within each packet, you’ll be rewarded with a shallow pool of miso-infused broth that is ideal over rice.
Black Cod, Regular Cod, or Halibut?
Black cod (sablefish) is the move if you can find it. It’s rich, buttery, and nearly impossible to overcook. Halibut is the leaner, meatier alternative; it’s excellent here but needs a couple extra minutes. Atlantic cod works too and is the budget-friendly pick, though it’s more delicate and flakes into smaller pieces.
Whichever you buy, aim for filets of even thickness so all four packets finish at the same time. Ask the fishmonger for center-cut pieces. Cod is one of the most versatile fish you can keep in rotation. If you’re looking for more inspiration on how to prepare it, check out my full collection of cod recipes.
The Folding Part (It’s Easier Than It Looks)
The crimp is the only real skill in this recipe, and it takes one packet to get the hang of it.
Note: I usually fold these by crimping, but my photographer used another method. Here’s how to crimp (and you can see it here with my salmon en papillote): fold the parchment over the filling, then work from one corner making small, overlapping folds — like you’re pleating a paper fan along the curve. Each fold pins the one before it.
Tips For Success
- The seal should be tight. A leaky packet lets steam escape and the fish dries out.
- The packet should have a little dome of air over the fish so steam can circulate.
- Paperclips are a legitimate solution to sealing. Just remember to remove it before serving.
- Don’t overload the vegetable bed. Everything needs to cook in the same 12 minutes as the fish. Thin, quick-cooking veggies only. (Note from testing: sliced carrots, potatoes, or thick broccoli all need par-cooking first — learned this the hard way.)
Make It A Complete Meal
Steamed white rice is non-negotiable in my house. It catches every bit of that miso broth! Lime wedges on the side, chili oil and toasted sesame seeds on top, cilantro over everything.
For a first course, I’d recommend starting with a bowl of warm, umami-rich miso soup with mushrooms, or even charred shishito peppers with garlic and ginger. And since you’ll have a container of miso paste open, salty-sweet miso chocolate chip cookies are your go-to dessert. Trust me on that one.
There’s something theatrical about setting four sealed packets on the table and letting everyone open their own. Steam, ginger, sesame, and one of the most luxurious pieces of fish you can cook at home. 😉 Can’t wait to hear your feedback on this one!
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Miso Black Cod en Papillote (Baked in Parchment)
Equipment
Ingredients
For the Sauce
- 3 Tbsp (45g) white miso paste
- 2 Tbsp (30ml) mirin or rice wine vinegar
- 2 Tbsp (30ml) sake or dry white wine
- 1 Tbsp (15ml) low-sodium soy sauce
- 1 tsp toasted sesame oil
- 1 tsp granulated sugar
For the Fish
- 4 (4-6oz) portions of black cod (sablefish) or halibut
- 1 cup snap peas. strings removed
- 2 baby bok choy, halved or thinly sliced
- 3 oz enoki mushrooms, roots trimmed and separated
- A 1-inch piece of fresh ginger, peeled and thinly sliced into coins
- 4 green onions, cut into 2-inch long pieces, ends discarded
- 4 tsp sake
For Serving
- Steamed white rice
- Chili oil
- Toasted sesame seeds
- Fresh cilantro, whole
- Lime wedges
- Flaky sea salt
Instructions
- Make the marinade. In a small bowl, whisk together 3 Tbsp (45g) miso paste, 2 Tbsp (30ml) mirin, 2 Tbsp (30g) sake, 1 (15ml) Tbsp soy sauce, 1 tsp sesame oil, and 1 tsp sugar.
- Marinate the fish. Pat fish filets dry with paper towels—this helps the marinade adhere. Place in a shallow dish or ziplock bag, coat with the miso marinade, then seal tightly. Refrigerate for at least 30 minutes.
- Preheat an oven to 400°F. Cut 4 pieces of parchment into approximately 15×12-inch rectangles. Fold each in half to create a crease, then open flat.
- Assemble. Just right of the fold on each parchment sheet, arrange a small pile of snap peas, bok choy (cut side up), and enoki mushrooms—this is the bed for your fish. Lay a marinated filet on top. Scatter the sliced ginger and scallions around each piece of fish. Add a tiny splash of sake to each (about 1 tsp).
- Seal the parchment. Fold the parchment over the fish. Starting from one corner, make small overlapping folds along the open edges to crimp and seal tightly. Secure with paperclips or twist the ends, if needed. Place all four packed on a rimmed baking sheet.
- Bake. Bake for 12-13 minutes. Black cod will be done closer to 12 minutes (it’s rich and silky and you don’t want to overdo it); halibut, being leaner, may need 2-3 minutes longer. The fish is done when it flakes easily and reaches an internal temperature of 130-135°F (54-57°C).
- Serve. Transfer packets to plates and cut open at the table for the full aroma reveal. Finish each with a drizzle of chili oil, a sprinkle of sesame seeds, and a handful of cilantro. I like to serve over steamed white rice with lime wedges on the side. Enjoy!
Notes
- Marinating time: 30 minutes is genuinely enough for weeknights. If you have more time, 2 hours gives noticeably deeper, more complex results. I don’t recommend marinating overnight, as the miso’s salt will begin to cure and tighten the fish.
- Black cod vs halibut: Black cod (sablefish) is the luxe choice (buttery and silky!). Halibut is leaner, firmer, and more widely available (+2–3 minutes). Both work beautifully. Cod and sea bass will also work here.
- Storage: Refrigerate leftovers airtight for up to 2 days. Best fresh. I do not recommend freezing.
- Doneness: Insert an instant-read thermometer directly through the parchment. Pull at 130–135°F (54–57°C).
- Foil: Works in a pinch and seals more easily, but you lose the presentation.
Nutrition
Photography by Jo Harding.
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