These sweet, starchy nuts have a hard, brittle shell and papery skin, both of which should be removed whether the chestnuts are to be used raw or cooked. Allow plenty of time because the skins tend to stick to the nuts and are difficult to remove. There are three different techniques.
Cutting
Hold nut between your fingers and cut away shell and skin with a sharp knife.
Toasting
Pierce shell with the point of a knife. Grill until the shells split. Cool, then peel.
Blanching
Put nuts in water and bring to the boil. Drain and skin while hot.