Sour soybean milk and preparation technology thereof

[0048] Example one

[0049] The manufacturing method includes the following steps:

[0050] (1) Raw material pretreatment

[0051] A. Preparation of germinated black soybean milk:

[0052] a1) Select black beans that are free from pests and mildew, wash them with clean water, and soak them in water at 27°C for 18 hours;

[0053] a2) Germinate at 32°C for 50h, and take out when the bud is 3mm long;

[0054] a3) Add hot water refining with a weight of 3 times the weight of black soybeans and a temperature of 97°C, and filter the slurry through a 110-mesh sieve to remove the bean dregs and retain the soybean milk;

[0055] a4) Soy milk is heated to boiling under constant stirring and kept for 12 minutes;

[0056] B. Preparation of black garlic powder and black onion powder: Peel the skins of black garlic and black onion, cut them into thin slices, and dry them in a vacuum oven at 52℃ and -0.1Mpa for 13 hours. After drying the black garlic and black onion, use a universal Crush the powder with a

[0070] Example two

[0071] The manufacturing method includes the following steps:

[0072] (1) Raw material pretreatment

[0073] A. Preparation of germinated black soybean milk:

[0074] a1) Select black beans that are free from pests and mildew, wash them with clean water, and soak them in water at 25°C for 15 hours;

[0075] a2) Sprout at 30℃ for 40h, and take out when the bud is 2mm long;

[0076] a3) Add hot water refining with a weight of 2 times the weight of black soybeans and a temperature of 95°C, and filter the slurry through a 100-mesh sieve to remove the bean dregs and retain the soybean milk;

[0077] a4) Soy milk is heated to boiling under constant stirring and kept for 10 minutes;

[0078] B. Preparation of black garlic powder and black onion powder: Peel the skins of black garlic and black onion, cut them into thin slices, and dry them in a vacuum oven at 50℃ and -0.1Mpa for 10 hours. After drying the black garlic and black onion, use a universal Crush the powder with a cru

[0092] Example three

[0093] The manufacturing method includes the following steps:

[0094] (1) Raw material pretreatment

[0095] A. Preparation of germinated black soybean milk:

[0096] a1) Select black beans that are free from pests and mildew, wash them with clean water, and soak them in water at 30°C for 20 hours;

[0097] a2) Sprout at 35°C for 60h, and take out when the bud is 4mm long;

[0098] a3) Add hot water refining with a weight of 4 times the weight of black soybeans and a temperature of 100°C. The slurry is filtered through a 110-mesh sieve to remove the bean dregs and retain the soybean milk;

[0099] a4) Soy milk is heated to boiling under constant stirring and kept for 15 minutes;

[0100] B. Preparation of black garlic powder and black onion powder: Peel the skins of black garlic and black onion, cut them into thin slices, and dry them in a vacuum oven at 55℃ and -0.1Mpa for 16 hours. After drying the black garlic and black onion, use a universal Crush the powder with