Quick 10-Minute Homemade Ceviche with Fresh Avocado

Fresh lime juice "cooks" raw fish right in the bowl to make a quick homemade ceviche. The acid turns the exterior of the fish opaque and firm. You can prepare this bright appetizer in just 10 minutes from start to finish. The fast method yields 5 to 6 portions.

The fish selection

You must buy fish explicitly designated as sashimi-grade or sushi-grade for safe raw consumption. Standard fresh fish from a supermarket counter poses food safety risks and is not automatically safe for raw preparations.

Tender fish varieties perform significantly better than chewy types. You can use kingfish, tuna, sea bass, mackerel, halibut, salmon, bream, swordfish, or trevally. Avoid snapper, grouper, flounder, and certain cods. These varieties maintain a tough texture when you prepare them raw. You can substitute cooked prawns or shrimp if you prefer not to eat raw fish.

You need to cut the raw fish into 1/2-inch (1.25 cm) cubes. This specific size provides the optimal texture for a short marinade time.

The Base Ceviche Mixture

You combine the fish cubes in a mixing bowl with the sliced red onion, cherry tomatoes, fresh jalapeño, black pepper, and lime juice.

You want to slice the red onion extremely thin. A mandolin helps the onion slices flop so they soften quickly and blend with the tender fish. Toss the mixture gently to coat the fish in the acid.

You leave the raw fish in the lime juice for exactly 5 minutes to initiate the cooking process. Mix the bowl gently one time during those 5 minutes.

Keep the olive oil, salt, and avocado out of the bowl for now. Introducing the oil right away weakens the lime juice, making it take longer to cook the seafood. Adding salt at the very beginning draws moisture out of the raw fish cubes. Leaving the avocado aside prevents the soft pieces from being crushed when you toss the initial mixture.

Finishes and Seasoning

After the fish rests for 5 minutes, you sprinkle the salt onto the mixture. Table salt requires a smaller volume than kosher salt because of its finer grain. You need 1/2 teaspoon of kosher salt or just 1/4 teaspoon of table salt.

Next, you add the diced avocado, the extra virgin olive oil, and the coriander leaves. You can replace the fresh coriander with chives.

Western limes are typically more sour than South American limes. The olive oil reduces the sharp sourness of the lime juice. Stir these final ingredients very gently. You want the avocado pieces to hold their shape instead of turning into mush.

Serving and storage limits

You serve the dish right away while the textures remain fresh. The dish stays at an optimal texture for about 20 minutes before the fish becomes overly firm. The acid continues to cook the seafood as it sits. The fish turns unpleasantly firm and overcooked if you leave it in the lime juice for 30 minutes or longer.

You can serve the mixture scooped into small cups or bowls with several different accompaniments.

• Crispy tostadas or standard corn chips.
• Plantain chips, ears of corn, or prepared slices of sweet potato.
• Small toasted crostini for a formal presentation.

You must discard any leftovers immediately due to food safety concerns. You cannot store this dish overnight in the refrigerator.