Peruvian Ceviche

• Fresh white fish fillet (sea bass or corvina), skinless and boneless 600g (1 lb 5 oz)

  60 g is set aside for the leche de tigre; the rest is cubed for the ceviche. Substitute: Flounder, halibut or sole, same weight, sushi-grade or previously frozen for raw eating.

  How to choose: Buy the freshest fish you can find: clear eyes and firm flesh if whole, or a clean sea smell and translucent, springy flesh if filleted. Ask the fishmonger whether it is safe to eat raw.

  How to prepare: Pat dry, trim any dark flesh, and cut into even 2 cm (3/4 inch) cubes; keep 60 g aside for the leche de tigre

  Required
• Lime juice, freshly squeezed 180 ml (3/4 cup, about 12 limes)

  Fresh only; bottled juice tastes flat and can be bitter here. Substitute: Lemon juice, same amount, for a slightly softer tang.

  How to choose: Heavy limes with thin, smooth skin give the most juice

  How to prepare: Squeeze and strain out seeds and pulp

  Required
• Red onion 120g (1 medium, about 4 oz)

  Sliced paper-thin into half-moons, then soaked in salted ice water. Substitute: White onion, same weight, soaked the same way.

  How to choose: Firm, heavy for its size, with dry papery skin and no soft spots

  How to prepare: Peel, slice very thinly, and soak in salted ice water for 10 minutes

  Required
• Ají limo chilli, seeded 20g (1 small chilli, about 0.7 oz)

  Finely chopped; use half for a milder ceviche. Substitute: Habanero, same weight, or 1 tablespoon ají amarillo paste.

  How to choose: Bright, glossy skin with no wrinkles; a small chilli is usually hotter than a large one

  How to prepare: Halve, remove seeds and veins, and chop very finely

  Required
• Garlic, minced 6g (1 small clove, about 0.2 oz)

  For the leche de tigre. Substitute: 1/4 teaspoon garlic powder, in a pinch.

  How to choose: Firm, heavy cloves with tight skin

  How to prepare: Peel and mince finely

  Optional
• Fresh cilantro, chopped 10g (about 1/3 cup leaves)

  Leaves and tender stems. Substitute: Flat-leaf parsley, same amount, for a milder herb note.

  How to choose: Bright green, perky leaves with no yellow or wilt

  How to prepare: Rinse, dry and chop

  Required
• Fine sea salt 6g (1 teaspoon)

  Half for the onion soak, half for the fish. Substitute: Kosher salt, same weight.

  How to choose: Fine salt dissolves fastest in the cold lime juice

  How to prepare: Measure out

  Required
• Sweet potato, boiled and sliced 300g (about 2 medium, 10.5 oz)

  Boiled in the skin until tender, then peeled and cut into thick rounds. Substitute: Boiled cassava (yuca), same weight.

  How to choose: Firm, heavy sweet potatoes with no soft spots or sprouts

  How to prepare: Boil whole in salted water for 20-25 minutes until a knife slides in easily, then cool, peel and slice

  Required
• Choclo (large-kernel corn), cooked 200g (about 1 cup kernels, 7 oz)

  Frozen choclo works well; boil until tender. Substitute: Regular sweetcorn kernels, same weight.

  How to choose: Frozen choclo from a Latin market, or fresh corn on the cob cut into rounds

  How to prepare: Boil in salted water for 10 minutes until tender, then drain

  Required
• Lettuce leaves, for serving 40g (4 large leaves, about 1.4 oz)

  To line the plates. Substitute: Butter lettuce or romaine leaves.

  How to choose: Crisp, bright leaves with no brown edges

  How to prepare: Rinse and pat dry

  Optional

Estimated cost: Medium — about $5–6 per serving at home (USD)

info A good Peruvian ceviche is cold, bright and sharp: the fish firm and silky, the onion crisp, the leche de tigre milky and spicy, never watery or bitter.

Execution Methodology & Culinary Technique

1. 1

   Boil the Sweet Potato and Choclo

   25 Mins Boiling water, 100°C (212°F)

   Put the sweet potatoes in a pot of salted water and boil for 20-25 minutes until a knife slides in easily. In the last 10 minutes, add the choclo to the same pot. Drain both, let the sweet potato cool, then peel it and cut it into thick rounds.

   Boiling the sweet potato in its skin keeps it from going watery; peel it only once it is cool enough to handle.

   Done when: Sweet potato tender all the way through; choclo kernels plump and soft.

2. 2

   Blend the Leche de Tigre

   5 Mins Cold, about 4°C (40°F)

   Put the reserved 60 g of fish, half of the lime juice (90 ml), the minced garlic, half of the chopped ají and a pinch of salt in a blender. Blend for 30 seconds until smooth, then strain through a fine sieve into a jug. This cloudy, spicy juice is the leche de tigre.

   Strain it: a smooth leche de tigre coats the fish evenly, while bits of blended fish make the ceviche look cloudy.

   Done when: A pale, milky juice that smells sharply of lime, garlic and chilli.

3. 3

   Cure the Fish

   10-15 Mins Chilled, 4°C (40°F)

   Put the cubed fish in a cold glass or ceramic bowl. Sprinkle with the remaining salt, add the rest of the lime juice and the remaining ají, and toss gently. Add the drained onion and the cilantro, toss once more, and leave in the fridge for 10-15 minutes. The fish will turn opaque at the edges and firm up — that is the acid doing its work.

   Do not cure it longer than 15 minutes: the fish goes from firm and silky to chalky and tough, and the lime starts to taste bitter.

   Done when: Fish opaque on the outside, still slightly translucent and silky in the centre, with a clean lime smell.

4. 4

   Plate and Serve

   5 Mins Serve cold, 4°C (40°F)

   Line each plate with a lettuce leaf. Spoon the fish and onion into the centre, lay slices of sweet potato and a spoonful of choclo alongside, and pour a little leche de tigre over each portion. Serve at once, with the rest of the leche de tigre in a small jug on the table.

   Serve it the moment it is plated: ceviche waits for no one, and the fish keeps curing in the bowl.

   Done when: Cold plates, bright fish, crisp onion, and the sweet potato and corn ready to balance each sharp bite.

vital_signs Nutritional Physiology & Benefits

Nutrition

Nutrition values are estimated — calculated from USDA FoodData Central values for the listed ingredients.

Vitamins & minerals: Sea bass provides vitamin B12, selenium and iodine; lime juice and ají add vitamin C; sweet potato and choclo add vitamin A, potassium and fiber. All nutrition values are estimated.

restaurant Food Pairings

What to Eat With

To optimize nutrient absorption and elevate the sensory depth, pair with these authentic accompaniments:

warning Digestive Guardrails

What NOT to Combine

To prevent digestive distress, sluggishness, or palate clash, avoid pairing the dish with these elements:

General information only, not medical advice — consult a doctor for personal dietary decisions.

Who Should Eat It

Who Should Eat

• General adultsA light, refreshing lunch for most adults; the protein and low fat make it a good warm-weather choice.
• ChildrenServe children a mild portion with the ají left out and the fish from a trusted source; the lime cure is not a substitute for cooking, so ask your clinician if unsure.
• ElderlyA gentle, easy-to-chew lunch, but raw fish carries more risk for older adults with weaker immunity — buy only fish sold as safe to eat raw and eat it the same day.
• Pregnant womenRaw fish is generally advised against in pregnancy, so skip this dish or use fish cooked to 63°C (145°F) first and cooled. Ask your clinician.
• Breastfeeding womenThe fish, lime and vegetables are fine for most breastfeeding women; keep the chilli mild and make sure the fish is very fresh.
• AthletesAbout 31 g of lean protein per serving with little fat makes it a good recovery lunch; add an extra slice of sweet potato for more carbohydrate after training.
• Weight gainA light dish on its own — add more sweet potato and choclo, or a second serving, to raise the energy.
• Weight lossAt 280 calories with high protein it fits a lighter lunch well; keep the sweet potato portion as stated and skip sugary drinks with it.

Health Conditions — Adjust or Avoid

Conditions

• DiabetesThe sweet potato and choclo carry most of the carbohydrate, about 32 g per serving; keep the portions as stated and check your blood sugar as usual. Ask your clinician about portions.
• High blood pressureSodium is moderate at about 726 mg per serving; most of it is the added salt, so you can cut the salt in the cure a little. Ask your clinician about portions.
• Kidney diseaseFish is high in protein and the dish is fairly high in potassium from the potato and corn; portion control matters. Ask your clinician before eating it regularly.
• GoutFish and seafood can be high in purines; a small portion now and then is usually better than a large one. Ask your clinician.
• Stomach issuesLime juice and raw onion can irritate a sensitive stomach; eat a small portion, skip the ají, and avoid eating it on an empty stomach. Ask your clinician if unsure.
• Cardiovascular diseaseLean white fish, little fat and no frying make this a heart-friendly choice in general; keep the salt as stated. Ask your clinician about portions.
• Fatty liverA low-fat, high-protein dish that fits well in general; the sweet potato adds fiber. Ask your clinician about portions.
• Food allergiesContains fish. If you are allergic to fish, do not eat this dish. The lime, onion and chilli are not common allergens but check the fish source for cross-contact.
• Special therapeutic dietsNaturally gluten-free and dairy-free as written, and low in fat. If you follow a low-sodium or low-potassium diet, adjust the salt and sweet potato and ask your clinician.

If you have a medical condition, consult your doctor before changing your diet.

kitchen Storage & Use

Storage & Use

How to store

Keep covered in the fridge in a glass or ceramic container; keep the sweet potato and choclo in separate containers.

In the fridge

Eat the same day. At most 24 hours at 4°C (40°F) or below, and only if it has stayed cold the whole time.

In the freezer

Do not freeze: the fish turns mushy, the onion goes soft and the lime juice turns bitter on thawing.

How to reheat

Do not reheat — ceviche is served cold. Any leftover fish that must be heated should reach 63°C (145°F), but the dish will not taste the same; discard leftovers instead.

Freezing recommended

No — freezing ruins the texture of the fish and the onion.

Signs it has spoiled

Fishy or ammonia smell, slimy fish, cloudy juice or any off taste — throw it away.