Instructions: 1. Combine walnuts, basil, garlic, parmesan and salt in food processor and process to a puree.

2. With the machine running, add the oil slowly. Scrape down the sides and process again. Store pesto in an airtight jar, preferably opaque to keep out the light. Keep pesto covered with a layer of oil to prevent the surface from browning. Store in refrigerator.

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