In spite of the fact that pesto contains very few ingredients and is not cooked, it is a very pungent and flavorful sauce. A little goes a long way. Pesto is typically served with pasta but can also be used in a dip or to flavor a hearty vegetable minestrone. To reduce the fat in this pesto you replace some of the olive oil with chicken or vegetable stock. More stock can be added if you like a thinner sauce. It is usually made with fresh basil but you could substitute some or all of the basil with parsley, spinach or even cilantro.