1. Use a very sharp knife to cut onions

Using a very sharp knife will help cut the onion quickly and neatly so that the stinging enzymes in the onion are not secreted too much, so you will no longer feel stinging eyes.

    2.Put the onions in the freezer for about 15 minutes before cutting

Before preparing, put the onions in the freezer for about 15 minutes. The low temperature will prevent tear-causing substances from spreading into the air when cutting the onions.

    3. Cut onions in water

Try cutting onions in a bowl of water or put the cutting board under running water and then start cutting onions as usual, the spicy substance will be quickly washed away by the water. Or while cutting onions, you can dip the knife in water after a few cuts so that the spicy substance does not stick to the knife and cause eye irritation.

    4. Cut onions near hot steam

The hot steam emitted will help absorb and dissolve the spicy gases, helping you cut onions more easily.

   5. Light a candle next to the cutting board while cutting onions

To limit the spicy vapors of onions in the air, light a candle next to the cutting board when cutting onions. The candles will burn the spicy gases from the onions when cutting. However, some people think this method is not very effective, but if possible, you can try it.

   6. Use lemon or sugar vinegar to rub the surface of the knife

You can use half a lemon to rub on the surface of the knife to cut the onion or apply a little sugar-vinegar mixture evenly on the cutting board. This way, the sulfur gas in the onion will be absorbed by the lemon and sugar vinegar, thereby reducing eye irritation. .

    7. Cut the onion stem last

The onion root is the location with the most sulfur gas. If you cut off the onion root first and then slice the onion, it will cause eye irritation. Therefore, you should not cut the root first, but should cut the onion first and then remove the remaining root.

8.Chewing gum while cutting onions

Although there is no exact explanation for this, many people have tried chewing gum (or anything else like bread) while cutting onions and no longer feel stinging eyes, you should try it.

   9. Wear glasses when cutting onions

The fastest way to avoid eye irritation is to simply put on your glasses before starting to cut onions. Glasses act as a barrier to prevent eyes from coming into contact with tear gas emitted from onions.

   10. Cut onions in a well-ventilated area

Cutting onions in a cool, ventilated place such as near a window, a hood, or placing a fan next to the cutting board when cutting onions will also help blow away the spicy gas, so you will no longer feel stinging eyes.

   11.Rub the potatoes on the knife

Before slicing onions, you can cut a potato and then rub the potato on the surface of the knife. The potato will effectively help reduce the amount of essential oil in the onion that escapes and flies into your eyes.

    12. Slice onions in a plastic bag

This is also a good tip that many people apply. Take a transparent plastic bag and put the onion in it. Chop the onion right in the plastic bag so that the onion vapor cannot splash into your eyes, so you won’t have tears.Slice onions in a plastic bagSlice onions in a plastic bag

    13. Limit the cut onion’s contact with the eyes

Always place the cut side of the onion facing the cutting board, not towards the eyes. This will limit the chance of onion vapor flying into the eyes.Limit the cut onion’s contact with the eyes

    14. Use support tools

For dishes that do not require intact pieces of onion, use a grater, onion cutter, multi-purpose vegetable slicer,… to chop onions quickly and conveniently.