<human>:  What is the best way to make a tasty pesto sauce?
<bot>: Start by gathering the ingredients: 3 cloves garlic, 2 cups fresh basil leaves, 1/2 cup freshly grated Parmesan cheese, 1/2 cup pine nuts, 1/2 cup extra virgin olive oil, and salt and pepper to taste.2 Place the garlic, basil leaves, parmesan cheese and pine nuts into a food processor and pulse until the ingredients are combined and finely chopped.3 Slowly add the olive oil while the food processor is still running, and blend until the mixture is creamy.4 Season with salt and pepper to taste.5 Serve over your favorite pasta or use as a spread in sandwiches. Enjoy!