The application discloses a preparation method of a seafood
mushroom soy sauce, and steps of the method comprise the following steps of S1, fresh seafood mushrooms are selected as raw materials, and after being washed, water is added according to a material-
liquid ratio of 1:4, the seafood mushrooms are subjected to extraction in a negative pressure extraction tank at a temperature interval of 70-80 DEG C, and residual debris and impurities of the seafood mushrooms are filtered out to obtain a seafood
mushroom extract; and S2, the seafood
mushroom extract is diluted in water with a
water volume of 20-30% at a temperature interval of 50-55 DEG C. The application replaces
soybean meal, a soybean
allergen, with seafood mushroom
powder, and solves the problem that soy products allergic groups will cause allergic reactions when eating soy sauce. The seafood mushrooms are dried through a gradient variable-temperature method, and the
flavor of the seafood mushrooms is improved through
drying. In combination with a variable-temperature
fermentation process of high temperature first and then medium temperature, the
flavor of a low-salt
solid-state soy sauce product is significantly improved, the
aroma and nutritional value of the product are improved, the product is convenient for the
soy product allergic groups to eat, and the product provides a
flavor soy sauce for selection for other non-allergic groups.