2/3 cup Eagle Brand sweetened condensed milk
1/4 cup vinegar or lemon juice
1/4 cup salad oil or melted butter
1 egg yolk
1/2 tsp. salt
dash of cayenne pepper
1 tsp. dry mustard powder

Place ingredients in jar (or cruet), cover tightly, and shake vigorously for 2 minutes.

If thicker consistency is desired, chill before serving.

Note: May place in mixing bowl and beat with rotary beater until mixture thickens.

Makes 1 1/4 cups.