Buttermilk is low in fat. The acidity of buttermilk gives it a longer refrigerator shelf life. Buttermilk can be found in the dairy section of a Grocery Store. Varieties of Buttermilk can be found, for example – cultured buttermilk, churned buttermilk and more.
These buttermilk cartons are available throughout the year and found in any grocery store where regular milk is sold.
How long is Buttermilk good for use?
According to the USDA, buttermilk lasts in a refrigerator for about two weeks. It can also be frozen for up to three months.