Microwave terms.22Arcing Arcing is the microwave term for sparks in theoven. Arcing is caused by:• Metal or foil touching the side of the oven.• Foil that is not molded to food (upturnededges act like antennas).• Metal such as twist-ties, poultry pins, gold-rimmed dishes.• Recycled paper towels containing smallmetal pieces.• Plates or dishes with a metallic trim or glazewith a metallic sheen.Covering Covers hold in moisture, allow for more evenheating and reduce cooking time.Venting plastic wrap or covering with waxpaper allows excess steam to escape.Shielding In a regular oven, you shield chicken breastsor baked foods to prevent over-browning.When microwaving, you use small strips of foilto shield thin parts, such as the tips of wingsand legs on poultry, which would cook beforelarger parts.StandingTimeWhen you cook with regular ovens, foods suchas roasts or cakes are allowed to stand tofinish cooking or to set.Standing time is especially important inmicrowave cooking. Note that a microwavedcake is not placed on a cooling rack.Venting After covering a dish with plastic wrap, youvent the plastic wrap by turning back onecorner so excess steam can escape.