Homemade Basil Pesto

1. Add pine nuts to a dry skillet over medium-low heat. Toast for 3–5 minutes, stirring often, until lightly golden and fragrant.
2. Add the toasted pine nuts, garlic, and lemon juice to a food processor. Pulse until finely chopped.
3. Add basil, parmesan, salt, pepper, and the ice cube. Pulse a few more times until combined.
4. Slowly drizzle in the olive oil while pulsing until smooth and creamy. Add more olive oil if needed.
5. Taste and adjust salt or lemon juice if needed.