Long ago this problem was solved in the food industry by using materials which broke the bubbles by lowering the surface tension of the liquid. In the early 1960s food-safe silicone oils were applied to this problem. Dow Antifoam A was the first product in the class. [DrDaddy's daddy worked in Midland where Dow is based.]
DOW Antifoam A is a smooth mixture of silicone oil with water (an emulsion). A few drops dramatically stops product foaming. A similar product is now available to cooks in drug stores. It relieves infants suffering from colic. [DrDaddy's first born suffered from colic for 150 straight days.] If it's safe enough for infants, it must safe for the rest of us.
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