Abstract: There is provided a method of carbonating a liquid dairy product ot which another liquid food ingredient is added in admixture by heating the mixture to between 160.degree. F. and 200.degree. F. for 5 seconds to 30 minutes, to form a buffer of the indigenous ash of the liquid dairy product, cooling and carbonating the mixture to at least 1.5 volumes of carbon dioxide.

Abstract: There is provided a method of carbonating a liquid dairy product to a high level of carbonization, while not destabilizing the liquid dairy product. A liquid dairy product is heated to a temperature of at least 160.degree. F. for a time not in excess of 30 minutes, whereby the indigenous dairy protein and ash therein are at least partially denatured. The denatured liquid dairy product is then cooled to a temperature of less than about 50.degree. F. The cooled liquid dairy product is subjected to pressurized carbon dioxide at sufficient pressures and for a sufficient time such that the taste and mouth feel of the carbonated dairy product is no longer that of the uncarbonated dairy product. The carbonation is carried out until there are at least 1.5 volumes of carbon dioxide dissolved in the dairy product. The product is then packaged in closed containers capable of substantially retaining the said degree of carbonation.