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Why does soy sauce have two colors: black and yellow?
Mainly because of the different categories. Dried yellow sauce is yellow. Soy sauce is black.

1, dried yellow sauce is solid, with red and yellow appearance and sweet taste. Dried yellow sauce will not turn black. After breaking it off, you can see that there is a white substance inside, which is red, firm in texture and attractive in sauce.

2. Soy sauce is brown-black, bright in color, radiant, salty and sweet, sticky, and the color will gradually darken after a long time.