To make different types of vinaigrette, do the following:
Garlic: Add 1 teaspoon minced garlic or 1/2 clove crushed.
Balsamic: Substitute balsamic vinegar for the wine vinegar.
Lemon Parmesan: Use fresh lemon juice instead of vinegar; add 1/4 cup finely grated Parmesan.
Scallion: Add 3 chopped whole scallions (about 1/4 cup).
Herb: Add 2 tablespoons chopped fresh herbs, such as thyme, parsley, or tarragon. Blue Cheese: Add 1/2 cup crumbled blue cheese, such as Roquefort.