Blanch basil leaves in salted boiling water for 30 seconds. Remove the leaves to a bowl of ice water to shock. Drain and dry them on a paper towels. Place the basil leaves or and oil in a blender and puree. Strain the oil, refrigerate, and let rest overnight to let any remaining solids settle to the bottom. A beautiful, clear oil will be your reward for patience. This should be refrigerated and used within 1 to 2 days. Yield: 1 cup