Custard refers to a number of culinary preparations involving whipped and cooked milk, sugar and egg yolk mixtures. Custards are typically very rich and thick and have many uses in desserts. Custard bases may also be used for quiches and other savoury foods. As a dessert, it is made from a combination of milk or cream, egg yolks, sugar, and vanilla. Sometimes flour, corn starch, or gelatin is added. Custard is usually cooked in a double boiler (bain-marie) or microwave, or heated very gently in a saucepan on a stove, though custard can also be steamed, baked in the oven with or without a hot water bath, or even cooked in a pressure cooker. Custard preparation is a delicate operation, because a temperature increase…