Question 1: What about the oil after food frying? If stored open, it will turn sour. Therefore, if you don't want to throw away the remaining oil, you must put it in a sealed container to avoid the strange smell of oil. For foods with fishy smell such as fried fish and mutton, the residual oil after frying often has a strong fishy smell. In this case, it is necessary to put a few slices of ginger or garlic in the frying process, which can greatly reduce the fishy smell. If you don't want the taste of ginger to enter the fried food, you can put the ginger slices in the oil pan after the fried food is out of the pan, simmer for about half a minute, and then stop the fire and let it stand.

Do not repeatedly heat oil at high temperature does not mean that heated oil and fried food oil can never be used. There are different treatment methods and principles according to different situations. If the color is dark, the viscosity is high and there are many impurities, it is recommended not to use it again. If the oil is not too dark, too thick and has few impurities, such oil can continue to be eaten. Before use, the grease should be left standing for a period of time to allow the dregs to precipitate, and the muddy oil with dregs below should be discarded.

How to deal with the residual oil of fried food?

1. We can also cook with the oil left over from fried food. Of course, before cooking, you must use a small amount of cooking oil to heat and then pour the remaining oil, which can reduce the secondary heating of the remaining oil and make the remaining oil effectively reused.

Thirdly, we can use the oil left after frying food to make all kinds of cold dishes. When cooking cold salad, we can use leftover oil as sesame oil, which is of course very delicious.

It can be used to make some delicious pasta. For example, when making Lamian Noodles or Lamian Noodles, you should put a lot of oil on the dough. The Lamian Noodles and Lamian Noodles made in this way are very delicious, and we can use the oil left over from frying food to wipe them.

4. It can be used to make stews. If we add a proper amount of fried food to the stew, the residual oil will taste more delicious, and it will be effectively used.

Question 2: What about the fried oil? Hello, yes. After I fry things at home, the remaining oil will be used for cooking, which will be very fragrant. Usually the oil can be used 2-3 times. If it is purely fried, it can only be fried twice, and the third time is used for cooking, which can make full use of it. I hope the terrier is useful to you and I hope to adopt it ~

Question 3: How to deal with the fried oil? When cooking fried food, it is usually necessary to fry a large amount of salad oil at high temperature to fry a crispy finished product, but it will smell when the oil is reused, and it is a pity to dump it; At this time, you can pour the leftovers into the frying oil, which will make the frying oil clear as water. You might as well try!

Question 4: What about the fried oil? If the oil is only fried once, you can filter it with a net and save it for cooking or frying again. The filtered oil can be stored in bottles for 1 ~ 2 months without any problems. It should be noted that metal mesh and ordinary plastic mesh must be used for oil filtration. Filtering hot oil will burn out.

Question 5: How to deal with fried waste oil?

As a "clean oil" application. When cooking, first put a little new oil into the pot, and then put a little residual oil when the main ingredient is almost cooked, which not only avoids the high temperature, but also improves the utilization rate of residual oil.

When cooking pasta such as Lamian Noodles, it is also a better choice to use such leftover oil.

Jiaozi and steamed buns are stuffed with leftover oil, because these foods are steamed, and the heating temperature will not exceed 100, which is safer.

It is also a better choice to use such leftover oil when serving cold dishes.

Question 6: How to purify the residual oil after frying?

1 First of all, understand the safety of edible oil. Cooking oil will produce harmful substances after high temperature. Generally, once fried edible oil is not harmful to health. If the oil temperature of fried food is low, it can be eaten after frying for two or three times. Cooking oil that has been fried many times is not safe to eat. It is recommended not to purify and eat. It can be used as fuel, industrial use or discarded. The most intuitive thing is to look at the color of the oil. If the cooking oil turns black, you should give up eating it no matter how many times you use it.

2. In the process of frying food, many foods will produce a layer of floating foam in the oil pan, which is also one of the sources of odor in the residual oil after frying. Therefore, in order to reduce the odor of frying edible oil, attention should be paid to removing floating foam during frying. It should be noted that foods with more water will bubble during frying. This is not floating foam, so pay attention to the distinction.

3. For foods with fishy smell, such as fried fish and mutton, the residual oil after frying often has a strong fishy smell. In this case, it is necessary to put a few slices of ginger or garlic in the frying process, which can greatly reduce the fishy smell. If you don't want the taste of ginger to enter the fried food, you can put the ginger slices in the oil pan after the fried food is out of the pan, simmer for about half a minute, and then stop the fire and let it stand.

4. There may be more fine residues in the fried things and edible oil, which is the most important source of burnt taste in the oil. Therefore, to remove the burnt smell of edible oil, it is necessary to remove these residues. If you have food-grade filter cloth at home, when the oil temperature is slightly hot, you can basically filter out most of the food residues by filtering out the remaining oil.

When none of the above methods work, if you want to completely remove the residue and odor, you can wash it with water. After the food is taken out, stop the fire and let it stand. When the oil temperature drops and does not splash when mixed with clean water, add clean water to the oil until the oil-water volume ratio reaches about 1:2. Then use chopsticks or spatula to stir the oil and water for about 10 minute, then let it stand for 1 hour, and scoop the upper oil layer into other containers. If the first cleaning effect is not good, then repeatedly add clean water to clean and repeat the above operations. It should be noted that the second cleaning needs to heat the oil and water before stirring. When cooking oil is washed, water needs to be removed. At this time, you can add water to the oil and put it in the refrigerator, set the temperature at about 2 degrees Celsius, let the oil solidify, and then scoop out the solidified oil on the upper layer to remove most of the water. For some vegetable oils, this method may not work.

Reminder: It is best not to use cooking oil.

Let's first take a look at the influence and change of frying on oil quality. Unsaturated fatty acids in edible oil are unstable in nature, and will be oxidized when heated at high temperature to produce free radicals for polymerization. In the absence of oxygen, the polymerization reaction will be more intense, which will change the refractive index of oil, lead to the deepening of oil color and the increase of viscosity, and affect the quality and nutritional value of oil.

The experiment also found that frying oil will be hepatotoxic if it is heated for more than 20 hours.

Furthermore, the smoke point of used grease will be reduced, so it is difficult for ordinary people to accurately grasp the smoke point of edible oil, and it is easy to exceed the smoke point when cooking. Cooking oil is harmful to health

Question 7: What if the oil bubbles when frying something? Before frying the raw materials, I will burn the cooking oil until it smokes slightly. Let it cool, then heat and fry things, so there will be no foam. Or put an onion after heating, stir-fry it, and then stir-fry something. After repeated frying, the oil of raw materials will continue to foam. Oil can't be used to fry things at this time. Change the oil. Deep-fried soaked oil with raw materials can be mixed with stuffing. It is best to throw it away (because the repeatedly fried oil contains a lot of toxic substances)

Question 8: It's a waste to dump the fried oil. What can you do with it? The fried oil can be used when cooking soup (you can eat it by dropping a few drops directly after the soup is cooked), and it will not be wasted ~ ~

Question 9: How to clean fried fish oil? It can be used continuously after being treated by the following methods.

1. Heat the fried fish oil in a pot, add a little onion, ginger and pepper, and then turn off the heat. Sprinkle proper amount of flour into the hot oil. After heating, the flour is gelatinized and precipitated, and trimethylamine dissolved in the oil can be adsorbed, which can remove most of the fishy smell of the oil.

2. Heat the fried fish oil, add onion, ginger and pepper to remove the fishy smell, and then pour in some mixed raw powder water; Raw flour water can absorb the fishy smell in the oil and skim the floating starch bubbles by heating and bursting and sinking into the oil.

3, eggplant, like a sponge, can absorb oil or taste. Eggplant can be fried with fried fish oil, which can make the eggplant crispy and delicious, and can also absorb the fishy smell in the oil.

Question 10: What about the fried oil? From a scientific point of view, the reuse of this oil will produce some bad things. It is often said that carcinogens are easy to produce. But I think it's ok to use it once or twice occasionally. Compared with eating fried food, this oil is actually harmless at all.

Fried products sold in restaurants outside usually use oil many times. For example, those who fry fried dough sticks don't change the oil every morning, but add a part on the first day, for example, 100 ml, and use 50 ml, and then add 50 ml of new oil the next day, and use it repeatedly ~ ~

So it is no problem to cook with this oil at home. Just use it casually!