How can milk have an extended expiration date of up to 90 days?
Shamrock Farms uses a process called ultra-pasteurization – or extended shelf life (ESL) – to produce our single-serve milks, Essentials™ and Half & Half (32 oz. size and smaller). This simply means the milk is heated to 285º F for four seconds, as opposed to traditional pasteurization, where the milk is heated to at least 170º F for a minimum of 20 seconds. As a result of this process and our airtight safety seal, our milk stays fresh on the shelves for much longer. And this ESL process has no effect on its taste or contents. In fact, the only thing we add in some of our milks are the vitamin fortifications you read on the label. Remember, as with all of our farm-fresh dairy products, once you remove the freshness seal, we recommend you enjoy our milk within seven days.