How to make yuba
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Production method 1. Material selection: The raw material of yuba is soybean, and its main components are protein and fat. Therefore, the raw materials should be fresh, soy beans containing more protein and fat without variegated beans.
2. Foam: The purpose of soaking is to make the soybeans absorb moisture and expand. The standard for soaking beans is to sift the two pieces of soybeans into a flat plate, but not to foam on the surface. The amount of soaked bean water is about 4 times that of soybean, which is required for the water to be exposed after the bean is swollen. Generally, the soaking time is 16 to 20 hours in winter, 8 to 12 hours in spring and autumn, and about 6 hours in summer. Soaked soybeans contain 100% water.
3. Refining: Refining is the destruction of the cell tissue of soybean, so that the soy protein is dissolved with water. When refining, inject 700~800% of water into the raw material and grind it into fine milky white soy milk.
4. Filtration: The milled pulp is separated from the soybean dregs by a pulper or a squeezer. 1 kg of soybeans is about 10 pounds of pulp, and the concentration of pulp is 17~18°.
5. Cooking the pulp: Put the filtered slurry into the cooking pot and heat it to 100 ° C. Note that the pulp must be boiled and burned.
6. Slurry filtration: After the slurry is boiled, in order to further remove the fine residue and impurities in the slurry, it is filtered with a fine bag to ensure the quality of the product. The filtered slurry is then placed in a peeling pot.
7. Peeling: The peeling pot is made of alloy aluminum plate. The pot is generally 700 cm long, 120 cm wide and 6 cm high. Steam is supplied from the boiler and heated through the bottom of the sandwich. Before the slurry is released, the partitions in the pot are arranged. When the slurry is full, the temperature is maintained at about 70 ° C. After the slurry is crusted, the skin can be peeled off. It is better to peel off the skin and reduce the saccharification of the pulp and increase the yield of yuba. Put the skin out and put it on the bamboo pole. Pay attention to the skin and prevent it from sticking to the raft.
8. Drying: After the scalp is filled with skin, it is sent to a drying chamber for drying. The temperature of the drying chamber should be kept above 40 ° C and the drying time should be about 12 hours.
9. Finished product: The quality of the yuba is golden yellow, no fold, no break, no wet heart, and the moisture does not exceed 10%.