How to Make It
Cut off pointed ends of garlic bulbs; place on a piece of aluminum foil, and drizzle with 3 tablespoons oil. Fold foil to seal.
Bake at 350° for 40 minutes; cool. Squeeze pulp from cloves.
Process garlic pulp, remaining 1/2 cup olive oil, vinegar, and next 3 ingredients in a blender until smooth.