2. A chocolate-flavored syrup according to claim 1, said syrup containing about 7.25 percent cocoa, 1.97 percent nonfat milk powder, 0.20 percent vanilla powder, 0.29 percent salt, 1.74 percent cane sugar, 44.2 percent invert syrup (76 percent solids), and 0.4 percent of an edible emulsifier, said syrup having a viscosity of about 56 cps. at 40* F. and when injected into seven times its volume of milk, yielding a chocolate milk shake having a viscosity of about 15 cps. at 40* F.

3. A syrup according to claim 1, including about one-half percent to 1 percent by weight of a member of the group consisting of sodium and potassium alginates, said syrup upon injection into milk in the proportion of one part of syrup to seven of milk, by volume, yielding a chocolate milk shake of at least 100 cps. at 40* F.

4. A syrup as defined in claim 1, contained in an aerosol dispenser having a discharge nozzle with a discharge orifice of about 0.125 inch diameter, said syrup being under a gas pressure of about 100 lb. per sq. inch.

5. A syrup according to claim 1, wherein the sugar content is sufficiently high to render the syrup self-sterilizing and hence capable of storage. without refrigeration.