Cookware and Utensil Guide (continued)– 4 –PlasticsPlastic dishes, cups and some freezer containersshould be used with care in a microwave oven.Choose plastic containers carefully, as some plasticcontainers may become soft, melt and may scorch.The majority of plastic dishes, even those designedfor use in the microwave oven, are not suitable forcooking foods with high fat or sugar content, or forlengthy cooking times. Most microwave plastic dishesshould not be used for longer than 3 to 5 minutes onP10 power. These dishes, although not suitable forextended cooking, may be used successfully fordefrosting or for use on lower power levels.Cooking Bags designed to withstand boiling,freezing, or conventional heating are microwave safe.Prepare bags according to manufacturer’s directions.When cooking by microwave, DO NOT use wiretwist-ties to close bag. They can act as an antennaand cause arcing (sparks).DO NOT COOK IN PLASTIC FOOD STORAGEBAGS.Plastic Wrap such as GLAD WRAP® can be used tocover dishes in most recipes. Over an extendedheating time, some disfiguration of the wrap mayoccur. When removing plastic wrap “covers”, as wellas any glass lid, be careful to remove it away fromyou to avoid steam burns.Loosen plastic but let dish stand, covered.Jars and BottlesJars and bottles can be used to warm food to servingtemperature, if the lid is removed first. Cooking shouldnot be done in these containers since most are notheat resistant and during extended heating times,heat from food would cause cracking or breaking.MetalMetal cookware or utensils, or those with metallictrim, should NOT be used in the microwave. Sincemicrowave energy is reflected by metal, foods inmetal containers will not cook evenly. There is also apossibility of “arcing.”Although metal utensils should be avoided inmicrowave cooking, some metal can be helpful whenused correctly.Aluminum foil can be used safely, if certain guidelinesare followed, to prevent overcooking. Small pieces offoil are used to shield areas such as chicken wings,tips of roasts, or other thin parts that cook before therest of the recipe is finished. Make sure foil isattached securely and doesn’t touch sides of oven,otherwise arcing may occur. Foil lined containers,either cardboard or plastic, should NOT be used inthe microwave oven as arcing could occur.Metal twist-ties, either paper or plastic coated,should NOT be used in the microwave oven. Frozendinner trays can be used in the microwave, if thecontainer is no deeper than 2 cm and is filled withfood. Metal skewers can not be used in microwaveovens as arcing may occur. Wooden skewers arereadily available and give the same result.Shells: Scalloped baking shells are best used duringreheating and for short periods of cooking time only.Thermometers are available for use in microwaveovens. DO NOT USE CONVENTIONAL MERCURYTYPE CANDY OR MEAT THERMOMETERS in foodwhile cooking in the microwave oven.Straw, Wicker and WoodStraw and wicker baskets may be used in themicrowave oven for short periods of time to warmrolls or bread. Large wooden utensils, such as bowlsor cutting boards should NOT be used for prolongedheating as the microwave energy may cause thewood to become dry and brittle.