Use 1 - garlic bulb for each cup of olive oil. After cutting off the top of the bulb, wrap the bulb in foil after drizzling it with olive oil. Bake at 400 for 45 minutes to 1 hour. Once cooled, squeeze the garlic into a container and add the oil. I use a catsup style squeeze bottle. Keep refrigerated. Should be ready to use after a day or two.