Ingredients
1/2 cup tarragon or cider vinegar1/2 cup water1/4 cup olive oil2 tablespoons prepared horseradish1/2 teaspoon lemon juice1 cup ground mustard1/2 cup sugar1/2 teaspoon salt
Preparation
In a blender or food processor, combine all ingredients; cover and process for 1 minute. Scrape down the sides of the container and process for 30 seconds.
Transfer to a small saucepan and let stand for 10 minutes. Cook over low heat until bubbly, stirring constantly. Cool completely. If a thinner mustard is desired, stir in an additional 1-2 tablespoons water. Pour into small airtight containers. Store in the refrigerator.
