En Chemise
En Chemise is the French term which means "With their skin", generally referring to potatoes with skins on or in a paste or pastry crust.
In cooking term, En Chemise which literally means "in a blouse" refers to food wrapped in their own skin, as in potatoes cooked with skin on (Jacket Potato), foods wrapped in caul fat or bladder, etc.
En Chemise is pronounced "ohn sheh-meez".