Fish with Citrus Fruit en Papillote

Baking en papillote, i.e. in a foil or paper parcel, is a simple and appealing way to cook fish. None of the flavour is lost; the fish is steamed to tenderness in its tight little capsule, absorbing the aromas of whatever else is in there with it. What’s even more appealing is that there’s no pan to wash up afterwards! If you want to make this just for yourself, season one fish fillet, lay it on oiled foil and add a squeeze of lemon juice, 1