How to pickle sweet onion at home?

1. raw materials: tender and crisp green onion 10 kg, white sugar 1 kg, 500 g of salt and 2 kg of vinegar.

2. Production process: clean and filter fresh green onions, put them in a jar, soak them in salt water for 7-8 days, and ferment them with lactic acid. Take it out and soak it in clear water to make the onion slightly salty. Then cut off roots, tips, skins, etc. Put the green onions in a jar, add sugar and vinegar and marinate. Seal the cylinder mouth and it will be over in 20 days. The finished product is sweet and sour.