Mustard Oil Dressing

From: AllRecipes

This tangy mustard vinaigrette is enlivened by hints of
   wine, garlic and onion flavors. Prep Time: approx. 5
   Minutes. Ready in: approx. 5 Minutes. Makes 1.25 cups (12
   servings).

1 1/2 tablespoons prepared
Dijon-style mustard
1/2 cup vegetable oil
1/2 cup red wine vinegar
1 teaspoon ground black pepper

1/2 teaspoon salt
1 pinch garlic salt
1 pinch onion powder
1/4 cup olive oil

Directions
1 In a jar with a lid, combine the mustard, vegetable
   oil, vinegar, pepper, salt, garlic salt, onion powder and
   olive oil. Cover and shake until thoroughly combined.
   Chill until ready to serve.