Tortilla Soup

Method

1. toast2 min
   dry pan, medium
   guajillo + ancho, pressed flat, 20–30 seconds a side until they puff and smell sweet — any wisp of acrid smoke means they have gone bitter and the whole pot will taste of it, so start over rather than continue
2. infuse15 min
   just-boiled water, off heat
   toasted chiles submerged under a plate to keep them down, until fully pliable; keep a cup of the soaking liquid but taste it first — ancho water is often bitter and the stock can carry the flavor alone
3. char10 min
   dry comal or heavy pan, high
   tomato cut-side down + onion + unpeeled garlic, turning, until blackened in patches; the blistered tomato skin is where the roasted depth comes from, so leave it on when it goes to the blender
4. mix3 min
   high speed, then strain
   drained chiles + charred tomato + onion + peeled garlic + a splash of stock, blended until completely smooth, then pushed through a sieve — guajillo skin never fully breaks down and leaves the finished soup gritty
5. fry8 min
   medium-high, spattering
   oil until shimmering, then the strained purée poured in all at once and stirred as it hisses and darkens by a shade, until it thickens and pulls away from the pan bottom in a mass. This is the step the shortcut versions skip: raw blended chile tastes flat and metallic, and only frying converts it into something round and sweet
6. simmer20 min
   low, partly covered
   + chicken stock + cumin + oregano + epazote + salt + chicken thighs, at a lazy simmer until the chicken shreds easily; hold it below a boil so the thighs stay tender rather than seizing into strings. Pull the chicken, shred it, return it, and discard the epazote sprig = broth
7. fry6 min
   1 cm oil, 180°C / 350°F, one layer
   tortilla strips in uncrowded batches until they stop bubbling loudly and turn pale gold, then drain on paper and salt while hot — the noise stopping is the water leaving, and strips pulled before that go soggy the moment they touch broth
8. top2 min
   at the table
   hot broth ladled into bowls + tortilla strips + avocado + cotija + sour cream + cilantro + a lime wedge squeezed in. Strips go on at the last second, never into the pot — the contrast between crisp and soft is the dish, and it lasts about ninety seconds