Buttermilk powder and water
Dry buttermilk powder is an extremely handy ingredient. It is basically dried buttermilk, but it has numerous other benefits including longer shelf life, being a flavor enhancer, stabilizer, and emulsifying ingredient.
It must be rehydrated and used in a liquid form if you're substituting it for fresh buttermilk. To make one cup (240 mL) of buttermilk, mix about 1/4 cup (30 grams) of powdered buttermilk with one cup (240 mL) of water. When using powdered buttermilk in recipes, it may be advisable to mix the powder with the other dry ingredients first before adding the water when using liquid buttermilk. It creates a creamy and smooth texture that can enhance the overall mouthfeel of your dishes.