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After the hot water is about to be boiled.

1. Heat begins, then blisters come out, and then more and more boiling water.

2. Generally, water can be boiled simply by using a kettle or an electric kettle. But just boiling is not enough, it must be boiled again in order to be regarded as "plain boiled water", please remember. Because it needs to be cooked, you can't use an electric kettle to cook it. Please use utensils suitable for "boiling" such as kettle or pot. Pour water into a kettle or pot and bring it to a boil over medium heat.

3. Vegetables containing natural toxins. Such as kidney beans, lentils, long beans, fresh cauliflower and so on. It is recommended to remove the tips and shreds at both ends of the beans, soak them for 5 minutes, then blanch them with boiling water for 5 minutes to make them lose their original green. In addition, the colchicine contained in fresh cauliflower is also easy to cause poisoning. It is recommended to blanch in boiling water for 5 minutes and then stir-fry and eat. Vegetables that are difficult to clean. Such as broccoli, cauliflower, etc.

4. How long will the frozen beef balls be cooked? if the frozen beef balls are boiled directly in the pot, the cooking process will first be thawed, and then the hot water will slowly infiltrate and then cook. It will take about 10-15 minutes to cook. If you see the beef balls floating on the water, getting bigger and expanding means that the beef balls are cooked.

Do you use cold water or hot water to cook porridge?

It is OK to cook porridge with cold water or hot water. But boiling water into the pot, can increase the consistency of porridge, taste will be better. If you want to cook good porridge, you can soak the rice for 45 minutes in advance. In the process of cooking, you can add a few drops of olive oil to make the porridge more attractive. In addition, you can use a large fire at the beginning, after the porridge boils, remember to turn the heat to cook slowly, so that the porridge will be more smooth and delicious.

It is better to use cold water to cook leftover porridge. If cold water is used to cook leftover porridge, the nutrition of rice can be integrated into rice soup in the process of gradually heating, which can reduce the nutrition loss of rice to a certain extent. It is not suitable to cook porridge in hot water. Cooking porridge is not suitable for hot water, the time for rice to absorb water is short, so it is not delicious. The process of cooking porridge is the process of rice fully absorbing water and starch gelatinization.

Rice porridge is generally rice under boiling water, or you can put it in cold water, both of which have their own advantages and disadvantages. Boiled rice can shorten the time of cooking porridge and better retain the nutrients of the rice, but the taste may be slightly worse. The advantage of rice under cold water is that it can fully absorb water, make the porridge more delicate and smooth, taste better, cook porridge for a longer time, and pay attention to the heat, otherwise it is easy to boil or fill the bottom.

Do not use cold water when cooking porridge, although many people basically use cold water to cook porridge, but this is not the case. This will greatly affect the taste and color of porridge, making the porridge that is difficult to cook very bad. So, if you want a pot of delicious porridge, please remember to put it in hot water. Only in this way, the boiled porridge looks very sticky and will have a very delicious taste.

Use hot water to cook porridge. If the boiling water is put into the pot, the starch on the surface of the rice will be cooked quickly, and the rice will not stick together so easily. And through the boiling water into the pot at that moment, the temperature inside and outside the rice grain will be greatly different, and the speed of rice ripening will be rapidly improved. If you drop a few drops of oil such as corn oil or sesame oil in boiling water, the stickiness of porridge will be further improved.

Put hot water into the pot. It is best to cook porridge in hot water, because if you cook porridge in hot water, it can cause small cracks in rice grains due to the temperature difference between inside and outside. In this way, the porridge is more delicious and cooked faster.

How to boil dumplings in cold or hot water?

1. Use hot water. Boil frozen dumplings or freshly boiled dumplings in boiling water. When cooking dumplings, you need to boil cold water before cooking dumplings. Before putting the dumplings into the pot, you should pay attention to take your time and put them one by one to avoid sticking together. Then in the process of cooking dumplings, you need to stir slightly to prevent dumplings from sticking to the bottom of the pot.

2. Fresh dumplings boiled in hot water: freshly wrapped dumplings should be put into the pot after the water in the pot is boiling, so that the protein in the dumpling skin can be solidified quickly and will not break the skin due to slow heating. Cold water boil frozen dumplings: frozen dumplings should be boiled in cold water, mainly because the cold water will slowly thaw the frozen dumplings in the process of slowly heating and boiling. After the water is boiled, the frozen dumplings can be cooked quickly.

3. Currently made dumplings: boiled water + cold water. If you are making fresh dumplings, you are advised to boil them in boiling water. When the dumplings are put in and the water boils again, you can add a small amount of cold water to them. Because if you let the boiling water boil all the time, the dumpling skins will be easily boiled. In this way, the boiled dumplings will naturally break their skins and become untasty, and it will also cause the outer skin to be cooked and the meat filling inside to be undercooked.

Why is hot water easier to boil than cold water?

1. Because the temperature of hot water is higher than that of cold water, it takes less time to boil water than cold water, so it is easier to boil. Because the potential energy of hot water molecules is higher than that between cold water molecules, hot water boils more easily than cold water.

2. in fact, there is not much difference between hot water and cold water, the most important point is the difference between speed and slowness, the temperature of warm water is relatively higher, so it will burn faster if you boil it with warm water.

3. if you cook the same amount of rice with cold water and hot water, it must be cooked faster by hot water, because it reduces the time for cold water to cook into hot water. And from a nutritional point of view, hot water cooking is better. Cereals are rich in B vitamins, which participate in the metabolism of carbohydrates in human cells and are an important part of enzymes in the human body.

As far as I know, it is better to use hot water than cold water when cooking, but it should be noted that hot water refers to boiled water. First of all, cooking rice with boiling water can shorten the cooking time, and the shortening of cooking time can protect the rich vitamins in rice. If you cook rice in cold water, generally speaking, because the water must first reach a fixed boiling point in order to make the rice fully cooked, but because the starting point of cold water itself is relatively low.