Ingredients: 2500 grams of old corn, 40 grams of sweet wine koji, water and jar.

1. When you buy old corn in the market, you must be full and big.

2. Wash with clear water, put the drained corn into the soup pot, add appropriate amount of water, and cook it to Microsoft on medium heat.

3. Wash a vat, dry the water and put the cooked corn into the vat.

4. Put the "sweet wine koji" into the jar and mix it with the corn.

Seal the jar in a cool place for a week, and you can use it to catch big fish.