4Microwave function onlyUtensils and cooking containers used in a microwave ovenshould be of a material that does not act as a barrier tomicrowave energy. Generally this means that you should cookin either (paper), plastic, glass or ceramic. Metal pans reflectmicrowave energy and inhibit cooking, and should not beused. In addition to material, the shape of the container shouldalso be considered. Round oval shapes give the most evencooking. Square or rectangular containers may over-cookfoods in the corners because more energy is absorbed there.Shallow containers give more even cooking results.Utensils made of china and ceramic excellent to use in yourmicrowave oven. Most types of glass are also very good.Lead crystal glass can crack and should therefore, not beused. Plastics and paper can also be used, provided theycan withstand the temperature of the heated food. Forcooking only use plastics, which will withstand a temperatureof over 120˚C, e.g. polypropene and polyamide. Some plasticmaterials, e.g. melamine, will be heated by the microwave,and be damaged. To find out if a certain container is suitable,the following simple test can be made:Place the empty container and a glass of water inside themicrowave oven. The water is needed because the ovenmust not be operated empty or with empty containers only.Let the oven work on full power for one minute. A suitablecontainer will only be lukewarm.Metal containers, e.g. saucepans or frying pans should notbe used in microwave ovens. Nor should plates or vesselswith decorations be used since metal e.g. gold, might be partof the decoration and such decorations will be damaged.Small pieces of aluminiuum foil can beused, but only to shield the areas thatwould over-cook (e.g. for coveringchickenwings, leg tips and fish tails) but the foilmust not touch the side of the oven asdamage may occur.TO AVOID EXPLOSION AND SUDDEN BOILIING 1. EggsNever cook eggs in their shells. Steam will build up insidethe shell during cooking and the egg will explode.If you want to cook or reheat eggs which have not beenbroken up by scrambling or mixing, you must alwayspierce the yolks or these will also explode. You shouldslice shelled hard boiled eggs before you reheat them inyour microwave oven.2. PiercingAlways pierce food which has a skin or membrane, forexample, potatoes, tomatoes, apples, sausages etc. If youdon't pierce them, steam will build up inside and they mayexplode.3. LidsAlways remove the lids of jars and containers and takeaway food containers, before you cook using yourmicrowave oven. If you don't, then steam and pressuremight build up inside and cause an explosion even afterthe microwave cooking has stopped.WHICH UTENSIL CAN BE USED IN THE OVEN?WARNINGWhen heating liquids, e.g. soups, sauces and beveragesin your microwave oven, overheating the liquid beyondboiling point can occur without evidence of bubbling:This could result in a sudden boil over of the not liquid.To prevent this possibility the following steps should betaken:a. Avoid using straight sided containers with narrow necks.b. Do not overheat.c. Stir the liquid before placing the container in the ovenand again halfway through the heating time.d. After heating, allow to stand in the oven for a short time,stir or shake them again carefully and check thetemperature of them before consumption to avoid burns(especially, contents of feeding bottles and baby food jars).Glass (general) No Yes (1) NoGlass (heat resistant) Yes Yes YesGlass-ceramic andceramic (heat resistant) Yes Yes (1) Yes (1)Earthenware Yes Yes YesChina (heat resistant) Yes Yes YesPlastic (general) No Yes (2) NoPlastic (heat resistant) Yes (2) Yes (2) Yes (2)Aluminium foil containers/aluminium foil Yes Yes (3) YesMetal baking tins Yes (4) No Yes (4)Metal (pots.pans, etc) Yes No NoPaper No Yes No1. Without metal parts or metal trims.2. Some plastics are heat-proof only to certain temperatures.Check carefully!3. It is possible to use aluminium foil to shield deliate areas offood (this prevents over-cooking).4. Metal tins can be used in the combination methods, howeverif these are very deep, they will greatly reduce the efficiency,as metal shields the microwave energy from the food.Caution:• There are a number of accessories available on themarket. Before you buy, make sure they are suitablefor microwave use.• When you put food in the microwave oven, make surethat food, food supports or covering do not come indirect contact with any of the internal walls or the ceilingof the cavity since discolouration may take place.Before use, the user should check that utensils are suitable for use in microwave ovens.MaterialGrill &ConvectioncookingMicrowavecookingCombinedcookingKOC-911K0S01(¿ )01.10.182:23PM˘ ` 4