Add the cilantro, walnuts, olive oil, garlic and jalapeño to a blender or food processor. Blend until a smooth, thick paste forms, 1 to 2 minutes. Add the cotija and pulse to blend. Add salt and pepper to taste.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Moo's Craft Barbecue, Los Angeles, CA