Shot Glass Apps: Ranch Sauce

3/4 cup buttermilk 3/4 cup sour cream 1/2 cup mayonnaise 1 1/2 tablespoons Worcestershire sauce 1 tablespoon lemon juice 1 tablespoon white wine vinegar 2 teaspoons chopped chives 2 teaspoons chopped fresh parsley 1 teaspoon mustard 1 clove garlic, crushed 1/2 green onion, chopped Carrots, cut into 2-inch strips, for serving Cucumbers, cut into 2-inch strips, for serving Bell peppers, cut into 2-inch strips, for serving