Is the steamed stuffed bun cooked above or below first?

First, whether the steamed bread is cooked above or below.

Because of the high kinetic energy of water vapor, it will greatly increase the fitness exercise, so the stay time at the bottom is short and it is not easy to disperse at the top (the cover is to avoid the loss of steam heat), which will increase the standard air pressure at the top and make things at the top easy to cook. Because the temperature of water at the bottom rises according to thermal convection, it boils at the melting point, liquid water becomes steam, and the steam with high temperature moves upward for fitness. When it reaches the top, it will vaporize and give off heat, so the temperature at the top is higher than the boiling point of local water (water at 100 degree will not be seriously burned by steam at 100 degree, because steam will vaporize and give off heat when it is cold).

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Second, what should I pay attention to when steaming things?

1, don't put the raw materials until the water boils. Please wait for the water in the pot to boil before putting the raw materials. When steaming, put it in water, but if you want to stew it, put it in water and heat it immediately.

Please add warm water when draining. When steaming, the pot must always be filled with boiling water. If the amount of water is too small, the amount of steam will be reduced, and the edge of the steamer will be easily burnt. If the water is insufficient, add boiling water immediately, and the temperature will not drop easily.

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3. The steaming time and duration vary with raw materials. Most raw materials should be steamed over high fire, such as meat or fish. But if you want to steam eggs, it is best to steam them with slow fire, so that the surface is not easy to have depressions. When steaming for a long time, try to open the outer cover by half, because that will reduce the temperature in the steamer. Finally, please steam according to the size and size of the raw materials, so that the steamed ingredients are delicious.