Citrus (Grapefruit) Vinaigrette - cooking recipe

Ingredients

1/2 cup white wine vinegar
1/2 cup ruby red grapefruit juice (it may be a blend, and that's OK)
1/2 shallot, minced (may sub 1 tsp dried minced onion)
1/2 teaspoon Dijon mustard
1 teaspoon sugar
1/8 teaspoon salt
1/8 teaspoon pepper
1 cup olive oil

Preparation

Combine first 7 ingredients in a medium sized mixing bowl.
Slowly whisk in olive oil to produce an emulsification.
Serve with grapefruit sections and avocado slices with fresh spring mix.