1Remove stems and seeds from the Guajillo chiles and Ancho chiles. Place the Guajillo chiles and Ancho chiles in a small pot with water, bring to a boil, then remove from heat and let them rehydrate for 15 minutes.
3Drain the rehydrated Guajillo chiles and Ancho chiles. In a blender, combine the rehydrated Guajillo chiles, Ancho chiles, chopped Jitomate, 100g of White onion, and Garlic cloves with 200g of Chicken broth until smooth. Strain the mixture through a fine-mesh sieve into a bowl to remove any solids, pressing down to extract all liquid.