Cuttlefish ink collagen jelly and preparation method thereof

The preparation method of the cuttlefish ink collagen jelly comprises the following steps: step 1, unfreezing cuttlefish ink sacs, then taking out cuttlefish ink, performing crushing treatment to obtain cuttlefish ink, and performing cold storage for later use; peeling, deseeding and juicing fresh lemon juice to obtain lemon juice, and refrigerating for later use; dissolving collagen tripeptide to obtain a collagen tripeptide solution, preserving heat in a water bath, and standing to obtain a transparent solution for later use; step 2, mixing konjaku flour, carrageenan and white granulated sugar, and dispersing the mixture into water to form jelly powder; sequentially adding the cuttlefish ink in the step 1, the collagen tripeptide solution and the lemon juice into the jelly powder while stirring, heating to boiling, and filtering while hot to obtain jelly liquid; and step 3, filling and sealing the jelly liquid, soaking and sterilizing in a hot water tank, cooling and drying to obtain a jelly finished produc