In the world, China is also known as the "gourmet kingdom". The food in China is very delicious, and many foreign foods run counter to the food in China. Most people in China like to eat meat, pork, mutton, beef and mutton and chickens and ducks. It is very cold in autumn and winter. When it is cold, people always like to eat meat. We all know that meat is soaked in water to continue cooking, but we know that there is a lot of foam on the water after pork is cooked. What exactly is this bubble? Many people think it is dirty, so they take out their spoons. Some people think it is the essence. So what should we do with this bubble and throw it away? Then let's see what this bubble is.

Is the bubble in cook the meat essence or dirty? Should I throw it away? If you look closely, you will find that bubbles don't appear once in cook the meat. It will appear at least twice. When we first put the meat into the pot, there would be a lot of dirty foam on the water. This is dirty, so we must throw away these foams. If we throw away the dirty things and continue to cook, we will find that bubbles appear on the water for the second time, but this time the bubbles are not equal to 1, and the color is a little clean. When the pot looks white for the first time, this foam should be thrown away in time. Because this is the rest of the blood and impurities. When the meat is cooked, it will be adsorbed on the foam, which is not only unsanitary, but also has a strong smell. If it is not removed in time, the foam will burst and become small cotton, which will be adsorbed on the meat and sink into the pot.

Boiling for a period of time will produce a lot of milky foam, which is white in color and will not deepen with time. These foams are macromolecules such as protein and the essence of meat, so they don't need to be thrown away. The second time I saw the foam on it, I could prove that this white material is not dirty, but the essence. Because when you first go to cook the meat, your blood will get dirty. This substance is dirty and can be fished out. The color is not clean and there is no nutrition in it. When I cooked for the second time, I saw that the floating substance was white, not dirty, but the fat and protein contained in the meat.