Cutting onion tears is a very common phenomenon. Many people experience tearing when they cut an onion. This is because onion contains a substance called lysine that stimulates the cornea of ​​the human eye. Nerve endings. So how to cut the onion without tears? Let's take a look at the specifics below!
Why does the onion tear?
People who cut the onion have experience of being shed tears. This is because the onion contains a substance called the alliinase. Usually it does not run out, but as long as the onion is cut, it will be transformed into a gas-like chemical released into the air. When this chemical comes in contact with the eyes, it stimulates the nerve endings of the cornea of ​​the human eye. Then the human body commands the lacrimal gland to secrete tears through the nervous system and flush away this stimulant material.
Some scientists believe that when an onion is destroyed, it produces an irritating gas, which is a form of self-defense. It allows rats and other small animals that eat it to leave. To cut the onion without tears, cut it in water, or put it in the refrigerator and refrigerate it for a while before cutting the onions to make the pungent gas less volatile.
How to cut onions without tears
So how can we not shed tears onions? Here are a few tips:
1. Cut onions in running water. Cutting the onion in the running water can control the volatilization of the gas in the onion. However, although this does not irritate the eyes, it wastes water. This trick is not recommended.
2, put the onion in the refrigerator. Before cutting the onions, keep the onions in the refrigerator and refrigerate them after 5-10 minutes. Cut them off and the pungent odor will evaporate less. When you cut them again, they will not shed tears.
3, chewing gum. There is a small hole in the lower eyelid near the bridge of the nose. It communicates with the bridge of the nose and throat to remove excess tears. Spicy gas is used to irritate the eyes when cutting onions, and lacrimal glands increase tear secretion. When the chewing gum is chewed, the upper jaw and the lower jaw are not broken, and a negative pressure is formed inside of the chewing gum, and tears are sucked into the oral cavity through the small hole. No tears in the eyes will tear.
4, bite chopsticks. When cutting the onion, the chopsticks are placed across the mouth so that the tears do not flow out. Because the chopsticks become dry in the mouth, the body will secrete saliva. Compared with the tears when cutting the onion, the saliva will The first flow out, so it has the effect of inhibiting tearing.
5. Soak the onion in cold water. If you do not enter the refrigerator, remove the onion from the head and tail, and cut it in half to soak it in cool water for 10 minutes.
6, microwave heating for 20 seconds. Before cutting the onions, heat the onions in a microwave oven for 20 seconds. Heat the wrapper with a plastic wrap. The heating is said to cause deterioration of the stimulating ingredients in the onions.
7. Wear swimming goggles to cut onions. Swimming goggles have a good effect on the closure of the eyes, so that when the onion is cut, no irritating substances are evacuated into the eyes.
8, cut the onion with a moist knife. It is also a good idea to cut onions with a wet tool. When cutting, the knife is often washed with water and cut. Before cutting the onion, it is best to apply vegetable oil on the kitchen knife so that it will not cry when you cut it.
9. Tap a candle next to the cutting board. Cutting onions while cutting onions can reduce the irritating odor of onions. The effect is good! If you put a spoonful of salt on the onion chopping board, you won't have a hot eye.
10, plug the tissue. Although it is not very elegant, but it is the easiest recipe, please put paper towels into the nostrils, because the pungent ingredients in the onion can irritate the eyes and plug the nose to prevent the irritant ingredients from entering the body.
If you have "tears", you can open the refrigerator freezer and put your head in and out (as long as the face feels cool), it will not make the eyes flow!
It should be noted that once the onion is cut, even if it is wrapped in a plastic wrap and stored in the refrigerator, its nutrients will be quickly lost due to oxidation. Therefore, it is best to eat as much as possible on the onion and try to avoid storage after cutting.
Onion cutting without tears
1) As we all know, onions are also old and the smell is heavier, so if you do not want tears when cutting onion, fresh onions are the best;
2) The knife should be ground faster. After peeling the onion, it releases a pungent odor. The longer it takes, the heavier the smell. So the faster the knife is, the better it will be, and the shorter the onion release time will be.
3) Appropriate methods, especially when cutting onions with onion, the appropriate cuts can also shorten the onion time;
4) In addition, the salt on the hands of the onion or the onion in the cold water can slow the release of the odor
5) Here is an onion cutting method:
a) onion cut off the head and tail, half cut after peeling
b) The onion is placed on the side, the left hand presses on the onion, the shreds start from the side but does not cut, that is to say that the roots of the onions are still connected together
c) If you want onions to be finer, the knife crosses onions two or three times
d) Finally cut the onion from the head to the root.
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