In the United States, half and half is a common liquid product produced by dairy companies in premixed form. It was invented by William A. Boutwell of Boutwell Dairy in Lake Worth Beach, Florida, which distributed the blend regionally between 1927 and 1956.

In the United States, half-and-half must contain between 10.5 and 18 percent milkfat. It is pasteurized or ultra-pasteurized, and may be