Ready-to-eat flavored freeze-dried fish gelatin peptide snack food product and preparation method thereof

The invention discloses a ready-to-eat flavored freeze-dried fish gelatin peptide snack food product and a preparation method thereof. The method comprises the following steps: S1, respectively pretreating fish gelatin and cereals, and crushing the fish gelatin and cereals into particles with the particle size of 3-5mm; s2, soaking fish gelatin and grains with the primary enzymatic hydrolysate at room temperature, and then soaking with ginger juice and cooking wine at room temperature to obtain soaked fish gelatin and grains; s3, the soaked fish gelatin and the soaked grains are washed and sterilized at high temperature, and cooked fish gelatin and cooked grains are obtained; s4, draining, diluting, wall-breaking and crushing the cooked fish gelatin and grains, and mixing to obtain mixed slurry a of the fish gelatin and the grains; performing enzymolysis by using secondary enzymatic hydrolysate to obtain mixed slurry b of the fish gelatin and the cereals after secondary enzymolysis; s5, cooking the mixed slur