Most commercial varieties are salted, so check the label if you are on a sodium-restricted diet.
Store in the refrigerator and serve well-chilled.
Tips & Tricks:
Irish folklore claims a glass of buttermilk will cure a hangover, and when heated with a clove of garlic, it was sure to cure any variety of ailments. Many pioneer women used buttermilk as a facial wash, believing the flecks of butter brought a smooth and creamy complexion.
If you have no buttermilk, you can make your own substitute, but go for the real thing if you can. Yoghurt can be substituted for buttermilk, volume for volume.