Flour, meal, powdered and confectioners’ sugar, and soda should be sifted before measuring. Mustard and baking-powder, from standing in boxes, settle, therefore should be stirred to lighten; salt frequently lumps, and these lumps should be broken. A cupful is measured level. To measure a cupful, put in the ingredient by spoonfuls or from a scoop, round slightly, and level with a case knife, care being taken not to shake the cup. A tablespoonful is measured level. A teaspoonful is measured level.