It is all a question of how you want your finished dressing to taste.
Simple Balsamic Vinaigrette Dressing Recipe
3 tablespoons aged balsamic vinegar
1 teaspoon Dijon mustard
1 garlic clove, peeled and crushed through a garlic press
3/4 cup extra-virgin olive oil
Salt and freshly ground pepper, to taste
Use a blender to mix the ingredients. It will produce a thicker vinaigrette dressing. One serving will equal 2 to 3 tablespoons of dressing. One cup should easily be enough for 6 to 8 servings of mixed green salad. Refrigerate and store in a covered container. Whisk well before serving.