Guacamole Taquero: Taco-Shop Guacamole

INGREDIENTS

• 1/2 pound tomatillos (5 or 6), husked, rinsed, and coarsely chopped
• 6 large (about 3 1/2 inches long) fresh epazote leaves or cilantro
• 2 small garlic cloves, peeled and coarsely chopped
• 1/4 cup coarsely chopped white onion
• 2 fresh serrano or jalapeño chiles, coarsely chopped, including seeds, or more to taste
• 1 tablespoon freshly squeezed lime juice, or more to taste
• 1/2 teaspoon fine salt, or 1 teaspoon kosher salt
• 1 small ripe Mexican Hass avocado, halved and pitted