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.