Replacement For Dry Mustard. Replace it measure for measure.turmeric will give you the same yellow color and some of the same flavor notes without the punch of mustard. Pretty much the same as wasabi powder, horseradish is also an excellent substitute for mustard powder.
So that’s something to keep in mind before adding too much of it to your mac and cheese. Dry mustard is usually made from brown and white mustard seeds. Substitutes include mustard seeds, prepared mustard, wasabi powder and horseradish.