Take basil leaves in a bowl and thoroughly wash them with cold water. Place them in colander, keep them aside until water drains out completely.

Now, in a blender, add basil leaves, walnuts, Garlic, Salt to taste and olive oil. Add Olive oil gradually. First, add 1/4 cup oil and blend them well, if mixture is dry add more olive oil and blend them until you get (smooth paste) the desired consistency for a sauce. You may end up adding more olive oil, but that’s perfectly fine.

Now, transfer them to mason jar, add olive oil on top (Cover sauce with olive oil) and store them in refrigerator.

For best taste, make fresh pesto right before making any dish.