2tablespoonsmustard powderwe use Coleman’s, but any available mustard powder will do
1/2teaspoonrice wine vinegar
Mix the mustard powder with 1 1/2 tablespoons water into a smooth paste. Add the remaining 2 1/2 tablespoons water gradually,, then add vinegar and salt, making a smooth thin sauce. Cover the sauce tightly and keep in refrigerator for later use.