Buttermilk shake is a refreshing and creamy beverage made with buttermilk, sugar, and flavored with vanilla or other extracts. It has a tangy and slightly sweet taste that is perfect for hot summer days. This shake is easy to make and can be enjoyed as a quick breakfast or a delicious snack. It is also a great way to use up leftover buttermilk from baking. Serve it chilled and garnish with a sprinkle of cinnamon or a dollop of whipped cream for an extra treat.