Cut off a part of the root of the newly bought shallots and keep a part;

2. Cut off the head of the plastic bottle and insert the onion into the water bottle;

3. add some water, not too much, just don't put onions.

Principle:

This is a water conservation method, which can make onions absorb enough water and prolong the shelf life of onions. As long as you change the water regularly, you can often eat fresh onions.

Fresh-keeping method of garlic

Tools needed: fresh-keeping bag

Steps:

1. Divide garlic into petals and remove the old skin and roots;

2. put garlic in a fresh-keeping bag and tie it tightly in the fresh-keeping layer of the refrigerator.

Principle:

Remove garlic roots that can destroy garlic germination and put them in fresh-keeping bags. Garlic will consume the air in the fresh-keeping bag and remove carbon dioxide, so garlic will breathe and grow very slowly.