Ceviche

Method

1. 01

   On the board — cut and chill

   Rinse the fish under cold water and pat it completely dry with paper towels. Water dilutes the leche de tigre.

   Trim away any dark bloodline or pin bones, and slice into even cubes. Uneven pieces cure at different speeds and leave you guessing.

   Drop the cubes into a non-reactive bowl and add the salt, tossing so every face gets a light coat. Salt draws a little moisture and seasons from the inside out — do this before the lime.

   Cover and refrigerate 5 minutes while you finish the onion and chile. The fish should feel cold to the touch when the juice goes on.

   Keep same-day fish on ice at 0–2 °C / 32–36 °F. Rinse, dry thoroughly and remove bloodline and bones. Cut uniform 1.5–2 cm (⅝–¾ in) cubes; toss with salt in a non-reactive bowl before adding lime. Cover and refrigerate 5 minutes.

2. 02

   On the onion — bite without bitterness8–10 min

   Slice the red onion as thin as you can. Thick wedges stay harsh and dominate every bite.

   Cover the slices with ice water for 8–10 minutes. This pulls out some of the sulphur compounds that make raw onion aggressive. Drain hard and pat dry — wet onion waters down the leche de tigre. The ice-water soak is not optional if your onions are sharp.

   Keep the onion separate until the last minute so it stays crisp against the softening fish.

   Slice red onion into paper-thin half-moons. Soak in ice water 8–10 minutes, then drain thoroughly and pat dry to avoid diluting the dressing. Keep separate until the final stage so it stays crisp.

3. 03

   On the chile and lime — heat and acid

   Wear gloves if you use rocoto. Seed and mince finely. Ají limo is brighter and fruitier; rocoto is deeper and hotter. Start with less — you can always stir more into the liquid later.

   Juice the limes now and strain them.

   Taste the juice alone. It should make your jaw tighten. If the limes are mild, add one more. Weak acid never finishes the cure.

   Wear gloves for rocoto; remove seeds and membranes and mince finely. Start with less chile and adjust later. Squeeze limes immediately before use and strain pulp and seeds; taste the juice and add another lime if weak.

4. 04

   On the cure — timed method8–15 min

   Pour the lime juice over the salted fish. Add the minced chile, and the grated garlic if using. Stir gently so every cube is submerged. The liquid should look cloudy almost at once as proteins leach — that cloud is the start of leche de tigre.

   Set a timer for 8 minutes and stir once at the halfway mark. Taste a cube at 8 minutes: the exterior should look opaque and pearly, and the centre can still show a faint translucence. That is correct for this style. If the cube is still glassy all the way through, give it 3–5 minutes more. If it is opaque and firm to the core already, stop — you are at the edge of overcure.

   Fold in the drained onion and stir for 30 seconds. Add most of the cilantro, saving a pinch for the plate. Taste the liquid: it should be salty, lime-sharp, chile-warm, with a clean fish undertone. Adjust salt or add a squeeze more lime now. If it tastes thin, crush one cube against the side of the bowl to thicken the leche de tigre.

   If the kitchen is hot, above 24 °C / 75 °F, drop in 2 ice cubes and swirl for 20 seconds, then remove them. This chills the bowl fast and keeps the texture from racing ahead.

   Total acid contact is typically 8–15 minutes from juice-on to plate. Serve immediately after the onion goes in.

   Pour lime over salted fish; add chile and optional garlic, gently submerging cubes. Cure 8 minutes, stirring halfway; if still glassy throughout, allow 3–5 minutes more, stopping before firm throughout. Stir in drained onion for 30 seconds, then most cilantro; adjust salt and lime. Crush one cube if liquid is thin. Above 24 °C / 75 °F, swirl with 2 ice cubes for 20 seconds and remove. Serve immediately; total acid contact 8–15 minutes.

5. 05

   On the sides — sweet, starch, crunch20–30 min

   Sweet potato: scrub, cover with cold water, bring to a boil, then simmer until a knife slides through with slight resistance — usually 20–30 minutes depending on size. If you check with a probe, a centre near 95–98 °C / 203–208 °F is done. Cool just enough to handle, peel, and cut into thick rounds or wedges. The sweetness cuts the acid.

   Choclo: boil in salted water until tender, 15–25 minutes for frozen giant corn, then drain. The big kernels are chewy and mild; they quiet the heat.

   Cancha: warm briefly in a dry pan if they softened in the bag. They should crackle when you bite them.

   Simmer scrubbed sweet potato from cold water 20–30 minutes until just tender, centre 95–98 °C / 203–208 °F. Cool enough to handle, peel and slice thickly. Boil frozen choclo in salted water 15–25 minutes; drain. Briefly dry-toast softened cancha until crisp.

6. 06

   Plate it

   Spoon the fish into a shallow cold bowl or onto a chilled plate, ladle leche de tigre over and around it, tuck the sweet potato and choclo to the side, and scatter the cancha and the last of the cilantro.

   The liquid should pool. People drink it. That is not a mistake; that is the point of leche de tigre.

   Plate cold — warm plates soften the cure and make the onion wilt.

   Spoon fish into chilled shallow bowls or plates and ladle leche de tigre over and around it. Place sweet potato and choclo alongside, then scatter cancha and reserved cilantro. Serve cold with the liquid pooling around the fish.

7. 07

   Sensory checkpoints and temperatures

   • Fish before acid: cold, firm, translucent, held at 0–2 °C / 32–36 °F.
   • During the cure: the bowl stays cool. If the room is hot, use the ice-cube trick or nest the bowl in a larger bowl of ice.
   • A done cube: opaque rim, slight give in the centre, no raw slime and no dry chalk.
   • Leche de tigre: cloudy pale, smelling of lime and ocean, tasting assertive. If it smells only of onion, the onion went in too early or was cut too thick.
   • Serving: cold plates, always.

   Hold fish at 0–2 °C / 32–36 °F before adding acid and keep the bowl cool over ice if needed. Check for opaque rims and yielding centres without chalkiness; leche de tigre should be cloudy and smell of lime and ocean. Use cold plates.