Sizing steps: 1 1 Buy a bag of original sizing water as the base. If you can't buy it, you can use mash juice or white vinegar instead.

Sizing step: 2 2 Boil water in a clear water pot, add shredded carrot, shredded lotus root and shredded celery, blanch water 10 ~ 20 seconds, and cool in the clear water pot.

Sizing steps: 3 3 The basin should be clean, oil-free, water-free and covered.

Sizing step: put a spoonful of corn flour and a spoonful of white flour into a 4/4 bowl, add a proper amount of water and stir well.

Sizing step: add water to a clean pot, boil, pour in flour juice, stir well and cook. Thin or thick, depending on the size of the basin, add water appropriately.

Sizing step: 6 6 Put the flour juice into the basin for about 10 minute.

Sizing step: 7 7 When it is warm and not hot, add sizing (primer). Cover and ferment in a warm place for 24 hours.

Sizing step: 8 8 finished product. Put it in a bottle and keep it in a cool place.