Basic Homemade Mustard

• 1½ cups white grape juice, preferably fresh
• 1 cup dry white wine

In a saucepan over medium heat reduce together by two thirds 1 cup of the grape juice, the white wine, vinegar, salt, pepper, and chopped shallots. In another small pot bring the remaining grape juice to a boil and simmer for 5 minutes. Set the latter aside.

Remove the mixture of reduced wine and juice from the heat. Put the mustard powder in a blender; start the blender on mix, and usi