Abuela's Secret Authentic Mexican Enchilada Sauce

Ingredients

• 8 oz (225g) dried guajillo chilies, stemmed and seeded
• 4 oz (115g) dried ancho chilies, stemmed and seeded
• 2 tablespoons vegetable oil
• 1 medium white onion, roughly chopped (about 1 cup, 150g)
• 4 cloves garlic, minced (about 1 tablespoon, 15g)
• 1 teaspoon dried oregano
• 1/2 teaspoon ground cumin
• 1/4 teaspoon ground coriander
• 1/4 teaspoon ground cloves
• 1/4 teaspoon cinnamon
• 1/2 teaspoon chili powder (optional, for extra heat)
• 4 cups (950ml) chicken broth
• 2 tablespoons all-purpose flour
• 1 tablespoon apple cider vinegar
• 1 teaspoon sugar
• Salt to taste (approximately 1-2 teaspoons)
• Black pepper to taste (approximately 1/4 - 1/2 teaspoon)