Bread dipped in guajillo chile sauce and filled with potatoes and chorizo is a Mexico City classic. This family-friendly street food delivers bold, fresh flavors and satisfying protein in every bite.
Boil the potatoes in salted water for about 20 minutes until tender. Drain, peel, and dice.
Remove stems and seeds from guajillo chiles. Boil chiles and garlic in water for 5 minutes, then blend with vinegar, onion, and 1/2 cup of the boiling water to make a smooth sauce.
In a skillet over medium heat, cook the chorizo for 5 minutes, breaking it up; add diced potatoes and sauté for another 5 minutes until lightly browned.
Dip each roll in the guajillo sauce, ensuring full coverage but not soaking; let excess drip off.
Heat vegetable oil over medium heat in a large skillet. Pan-fry dipped rolls for 2–3 minutes per side until crisp and golden, then fill each roll with the potato-chorizo mixture. Top with lettuce and cotija cheese, serve immediately.