How to make
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Black bean washed and drawn up in a colander. Remove cracked and broken skin one.
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Put water and seasoning of A into UNILLOY casserole, and boil with rust nail.
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Turn off the fire, put ① in the pot ② and left to stand overnight.
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In the next day, heat over the pot of ③, after boiling skim off the scum.
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Cook low heat for 2-3 hours with drop-lid and the lid too.
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Turn off the fire and cool down, in the next day cook low heat for 2-3 hours again.
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Repeat this a few times.
