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How does acidity in pork rib soup change the sourness?

If it turns sour, it means it has gone bad and cannot be eaten. The soup needs to be filled with ice. If not, it needs to be boiled before being put in.

Instructions:

Materials

Ingredients: 300 grams of short ribs, one corn, one carrot

Seasoning: green onion, ginger, cooking wine, salt

Method

1) Blanch the short ribs with cooking wine, cut the corn and carrots into knives, and tie the green onion and ginger slices for later use.

2) Put all the ingredients into the pot and cook, skim the foam after boiling, and simmer for 60 minutes.

3) Finally, season the pot with a little vinegar, which can better help the absorption of calcium. Just take it out of the pot.