Grade A pasteurized. This sour cream does not contains the growth hormone rBST (According to the FDA, there is no significant difference in milk from rBST treated cows and non-rBST treated cows). There is absolutely nothing like the tangy bite of a healthy helping of my Clover sour cream. And it's truly the cream of the crop because it comes from select herds that are never injected with synthetic growth hormones. I like the way it's made. You'll love the way it tastes. And, like all Clover products - it's Made from the milk of human kindness. My best to you, - Clo.