Share: Skim To remove with a spoon a layer of fat or foam that rises from the top of cooking liquids. Featured Recipes Surprise Raspberry Jam I've made this jam for many years and no one has been able to guess the secret ingredient —tomatoes! Everyone swears it tastes just like fresh raspberry jam! —Elizabeth Baker, Birdsboro, Pennsylvania Related Tips Glaze To coat the exterior of sweet or savory foods with a thin, glossy mixture. Au Jus Natural, unthickened juices that collect while roasting meats. Plump To soak dried fruit such as raisins and cherries in liquid until softened.