Provided is a method for manufacturing an edible beverage or food product characterised in that the method comprises (a) acquiring AI type bovine milk, (b) adding a glycation promoting carbohydrate material or ascorbic acid, (c) causing glycation of bovine milk proteins during or after a high-temperature sterilising treatment, and (d) packing the product. The product contains a glycated peptide which has a soporific effect.
