En Papillote
En papillote (French for "in paper") is a method of cooking food sealed inside a parchment-paper packet. As the packet heats, moisture from the food and any added liquid turns to steam, which cooks everything gently and traps its aromas inside.
How it works
A sealed packet is a tiny steam oven. Heat from the oven passes through the paper and warms the contents. Water in the fish, vegetables, wine, or citrus juice reaches about 100 °C / 212 °F and vaporizes, building pressure and making the packet balloon.
Because the food is surrounded by moist air at around boiling temperature rather than dry oven air at 200 °C, its surface never browns or dries out. Proteins cook through gently, so fish stays flaky and juicy. Every aromatic compound released by herbs, citrus, and garlic stays in the packet and condenses back onto the food, instead of escaping into the kitchen.
Best foods
- Fish: cod, halibut, salmon, sole, trout, snapper
- Shellfish: shrimp, scallops, mussels
- Chicken breast: sliced thin or pounded even
- Quick-cooking vegetables: zucchini, asparagus, thin-sliced fennel, cherry tomatoes, spinach
Pair ingredients by cooking time. Thick carrots or potatoes need to be sliced very thinly or blanched first, or they will still be crunchy when the fish is done.
Times and temperatures
| Food | Thickness | Oven | Time |
|---|---|---|---|
| White fish fillet | 2.5 cm / 1 in | 200 °C / 400 °F | 12–15 min |
| Salmon fillet | 2.5 cm / 1 in | 200 °C / 400 °F | 12–15 min |
| Shrimp, scallops | Large | 200 °C / 400 °F | 8–10 min |
| Chicken breast | 2 cm / 3/4 in, pounded | 200 °C / 400 °F | 20–25 min |
Cook chicken to 74 °C / 165 °F. For fish, the USDA recommends 63 °C / 145 °F and Health Canada recommends 70 °C / 158 °F.
How to build a packet
- Cut a 30 × 40 cm (12 × 16 in) sheet of parchment and fold it in half. Cut a half-heart shape so it opens into a heart.
- Lay thinly sliced vegetables on one side near the fold, then the protein on top.
- Season, then add aromatics: herbs, citrus slices or zest, garlic, ginger.
- Add 1–2 tbsp liquid (white wine, stock, citrus juice) and a little butter or olive oil.
- Fold the paper over and crimp the edges with tight, overlapping folds, twisting the tip to seal.
- Bake on a sheet pan until puffed.
Serving
Bring the packets to the table and cut them open there. The burst of fragrant steam is half the appeal. Spoon the juices over the fish; they are a ready-made sauce.
Leaks are the most common problem. If the seal is loose, steam escapes, the packet stays flat, and the food cooks unevenly. Crimp tightly.
Questions
What temperature do you cook en papillote?
Most recipes use a hot oven, 200–220 °C / 400–425 °F. A 2.5 cm (1 in) thick fish fillet takes about 12–15 minutes; boneless chicken breast takes about 20–25 minutes.
Can I use foil instead of parchment?
Yes. Foil seals more easily and works on the grill, but it does not puff as dramatically and can react with acidic ingredients like tomato or lemon. Parchment gives a more even, gentler steam.
How do I know fish en papillote is done if I can't see it?
The packet puffs up once steam builds, which usually means the fish is close. Check one packet with a thermometer; fish should reach 63 °C / 145 °F per USDA guidance, or 70 °C / 158 °F per Health Canada.
What is the difference between en papillote and steaming?
Both cook with steam, but en papillote makes the steam from the food's own juices plus a splash of wine or butter, trapped in a sealed packet. Flavours concentrate instead of dripping away into a pot of water.