What should I do if the cold dishes get cold before they are served?

You can put a vegetable cover on the vegetables.

The vegetable cover consists of three layers, the inner layer is aluminum foil heat insulation inner layer, which is heat-resistant and reflective, the middle layer is pearl cotton heat-gathering interlayer, and the surface layer is Oxford cloth waterproof interlayer, which is also plated with aluminum foil. This layer is also a heat insulation layer, which rejects air convection and heat transfer inside and outside the vegetable cover. No matter how cold it is outside, the heat inside can't be dissipated, forming an independent closed thermal locking space.

When the room temperature is 20 degrees, the food will become about 30 degrees in less than 30 minutes, and it will become the same cold dish as room temperature in ten minutes.

If it is zero, I'm sorry. In less than 30 minutes, the food became "iced rice". Cold food, in addition to bad taste, will also cause harm to the stomach. Eating cold dishes and cold rice for a long time will reduce gastrointestinal peristalsis, reduce digestive function and induce diarrhea!

Many people are used to microwave heating, and the food heated by microwave has always been controversial. Some people say that it is good, and some people say that it has broken the molecular structure of food. But whether it's delicious or not, what's even more uncomfortable is that the food with good color, smell and taste tastes like a pot of rice after entering the microwave oven, which is absolutely unbearable for those who have worked hard to cook.