Ingredients

2clovesgarlic

8cupsbasil leaves

2cupsflat leaf parsley leaves

1cupmint leaves

1cupnuts,roasted

3cupsextra virgin olive oil

1stickunsalted butter

1cuppecorino romano cheese,grated

salt,to taste

Preparation

In a food processor, chop the garlic. Add the basil, parsley, and mint and pulse until chopped. Add the nuts and oil and pulse until a smooth paste forms. Add the butter and cheese and pulse until incorporated. Season with salt.

Spoon the pesto into 5 1-cup canning jars or airtight plastic containers. Tap lightly on a flat surface to release any air bubbles.

Pour ½-inch of olive oil on top of the pesto. Seal the jars and refrigerate for up to 2 months or freeze for up to 6 months.