<human>:  How do I make a citrusy pesto sauce?
<bot>: To make a citrusy pesto sauce, start by blending 4 cloves of garlic, 2 tablespoons of pine nuts, 1/2 cup of olive oil, 1/4 cup of freshly squeezed lemon juice, 1/2 teaspoon of salt, 1/4 teaspoon of freshly ground black pepper, and 1/4 cup of freshly grated Parmesan cheese together in a blender or food processor. Then, slowly add 2 large handfuls of fresh basil leaves and pulse until the ingredients are combined into a paste. Serve the pesto sauce over your favorite pasta or vegetable dish or use it as a dip for crusty bread. Enjoy!