The official U.S. government definition for ultra-pasteurized dairy product requires “Products must be thermally processed at or above 280° F for at least 2 seconds, either before or after packaging, so as to produce a product which has an extended shelf life under refrigerated conditions.” Incomprehensibly, ultra-pasteurized milk is oftentimes referred to as or labeled as UHT, for “ultra-high temperature.” It is the high-temperature processing that gives the milk an extended shelf life (ESL). When packaged in aseptic containers, UHT milk remains stable at room temperature for up to six months.