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1
Cut the Shrimp
10 Mins
Chilled, 4°C (39°F)
Cut the peeled shrimp into even 1 cm pieces and put them in a cold glass or ceramic bowl. Small, even pieces cure quickly and evenly in the lime juice.
Use a glass or ceramic bowl, not metal — the acid in the lime juice can react with metal and give a bitter taste.
Done when: Even, bite-size pieces of translucent pink shrimp.
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2
Cure in Lime Juice
20 Mins
Fridge, 4°C (39°F)
Pour the lime juice over the shrimp and toss so every piece is covered. Cover and refrigerate for 15–20 minutes, tossing once halfway, until the shrimp turn opaque white-pink and firm. The acid firms the shrimp, but it does not cook them the way heat does — so use only very fresh shrimp from a trusted source, keep the dish chilled, and eat it promptly. Raw shrimp carries a food-safety risk, especially for children, pregnant women, older people and anyone with a weakened immune system, who should choose a cooked-shrimp version instead.
Do not cure longer than 25 minutes — the shrimp will turn tough and chalky.
Done when: Shrimp opaque white-pink right through, firm but still tender.
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3
Dice the Vegetables
10 Mins
Room temperature, ~20°C (68°F)
While the shrimp cures, dice the tomato, red onion and cucumber, mince the jalapeno and chop the cilantro. Keep the pieces small and even so every spoonful has a little of everything.
Seed the tomato and cucumber first — their juice would water down the ceviche.
Done when: Small, even dice; the jalapeno minced fine.
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4
Mix the Ceviche
5 Mins
Chilled, 4°C (39°F)
Drain off about half of the lime juice from the shrimp. Add the tomato, onion, cucumber, jalapeno and cilantro, pour in the tomato-clam juice and season with the salt. Toss gently. This is what makes it Mexican-style ceviche: the tomato and tomato-clam juice give it a savoury, slightly sweet base, unlike aguachile, which cures the shrimp in a chilli-lime water with no tomato at all.
Taste and adjust the salt and jalapeno now — the lime will keep softening the flavours as it sits.
Done when: Everything evenly mixed, bright and glossy, with the shrimp still firm.
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5
Serve on Tostadas
5 Mins
Serve cold, 4°C (39°F)
Spoon the ceviche onto crisp corn tostadas, top with avocado slices and serve immediately, while it is still ice-cold. Put any extra hot sauce on the table so each person can season their own.
Assemble the tostadas at the table — a tostada loaded too early goes soft.
Done when: Cold ceviche piled high on a crisp tostada, avocado on top.
auto_awesome Finishing Touches & Plating
Serve the ceviche ice-cold on crisp tostadas with avocado, and eat it the same day — it is at its best within a couple of hours of making it.