Some milk and most milk by-products at the grocery store are Ultra Pasteurized (UHT). When a dairy product is pasteurized, it is basically cooked at a very high temperature for a very short period of time to kill any bacteria that may be present that would cause the product to spoil. Ultra pasteurization involves a longer cooking process and can change the flavor of the milk. It doesn’t taste as fresh. Since we haul, produce, package and ship our own milk (every three days) we can control the quality of the product – giving our customers the freshest milk possible. It is 48 hours from cow to shelf! Learn more about Stewart’s Milk