including 1 tablespoon of ground mustard or dry mustard powder, 1 tablespoon of white wine vinegar, and 1½ tablespoon of mayonnaise. How to store homemade Dijon mustard substitute? You can store it in ...

While this substitution may not work in every recipe ... It is also a great alternative when a recipe calls specifically for mustard powder, like in this prime rib dry rub. Read the original article ...