en papillote
US /ˌɑːn pæpɪˈloʊt/
UK /ˌɑːn pæpɪˈloʊt/

1.
al cartoccio
a method of cooking in which food is enclosed in a packet of parchment paper or foil and cooked in the oven, allowing the food to steam in its own juices and flavors
:
•
The chef prepared the salmon en papillote with herbs and lemon.
Lo chef ha preparato il salmone al cartoccio con erbe e limone.
•
Cooking vegetables en papillote keeps them tender and flavorful.
Cucinare le verdure al cartoccio le mantiene tenere e saporite.