A question about a recipe: Horseradish Dill Potato Salad

Question

I have a question about the ingredient "buttermilk" on the recipe "Horseradish Dill Potato Salad" from thirschfeld.

thirschfeld · Answer

If you don't have buttermilk you can use plain yogurt, or add 1 teaspoon of vinegar to 1 cup of whole milk.