一、存放热菜应先冷却,热菜肴千万别马上放入冰箱,因为这样会使冷冻时间延长。此外,菜肴的热量使冰箱内部温度升高,造成以前冷藏的食物变质。应将菜肴冷却后再用塑料袋密封放入冰箱.二、食品不宜再次冷冻,食品再次冷冻不仅会减损其鲜味,而且难以消化,致使营养价值受损失和不卫生。凡是解冻了的食品宜尽快 First, store hot dishes should be cooled, hot dishes do not immediately into the refrigerator, because it will make the freezing time longer. In addition, the heat of the dishes raises the internal temperature of the refrigerator, causing the previously frozen food to deteriorate. Should be cooled dishes and then sealed with plastic bags into the refrigerator. Second, the food should not be frozen again, frozen food will not only reduce its flavor, but also difficult to digest, resulting in loss of nutritional value and unsanitary. All thawed food should be as soon as possible