Salsa Negra

Name: Salsa Negra
Ingredients: 3/4 cup plus 2 tablespoons grapeseed oil; 3/4 ounces chiles de árbol, stemmed; 3/4 ounces guajillo chiles (about 3)—stemmed, seeded and cut into pieces; 10 black garlic cloves, peeled and minced (see Note); 10 fresh garlic cloves, minced; 1 tablespoon white wine vinegar; 1 tablespoon piloncillo (raw Mexican sugar) or packed light brown sugar; 3/4 teaspoon cumin seeds; Kosher salt