Ancho and Gaujillo Chile Harissa

Name: Ancho and Gaujillo Chile Harissa
Yield: makes about 1 cup
Ingredients: 5 dried ancho chiles* (about 2 ounces total), stemmed, seeded; 5 dried guajillo chiles** (about 1 ounce total), stemmed, seeded; 1 teaspoon cumin seeds; 1 teaspoon caraway seeds; 1 large garlic clove, chopped; 3 tablespoons orange juice; 2 tablespoons extra-virgin olive oil; Mortar and pestle or spice mill