1, the steps are different. The production process of red sufu is divided into four main steps: 1. Fermenting soybeans; The second is to soak in low salt water to remove odor; Thirdly, mixing soybean and salt and fermenting; Fourthly, putting the fermented soybean paste into a sealed container, brushing a layer of monascus water on the surface of the soybean paste, and then continuing fermentation; The technology of green sufu is relatively simple, with only three steps: first, fermenting soybeans; The second is to soak fermented soybeans in salt water; The third is to put the soybeans in a sealed container and then ferment them again.

2. The time is different. The whole production process of red fermented bean curd takes several months, and the production process of green fermented bean curd only takes several weeks.