- Gather all your ingredients and prepare them for blending. 
- Fresh basil leaves and peeled garlic cloves are essential. 
- In a food processor, add the basil leaves, garlic, and pine nuts. 
- Pulse for 10 to 15 seconds until they are roughly chopped. 
- With the food processor running, slowly add the olive oil. 
- This will help the mixture turn smooth and combine well. 
- Add the grated Parmesan cheese and salt to the mixture. 
- Pulse a few more times until everything is well blended. 
- Taste the pesto and adjust the seasoning if needed. 
- You might want to add a bit more salt or cheese based on your preference.