A Callao-born appetizer where every shell carries a burst of sea and freshness. Tender mussels are topped with a crisp mix of red onion, tomato, corn, ají limo, and lime, bright enough to wake up each bite without hiding the shellfish. Make the full platter—it usually disappears before anyone admits how many they ate.
Turn what you find into an experience you can actually bring to your kitchen.
Place the corn in a medium pot with most of the water and simmer for 10 to 12 minutes, until the kernels are tender but still firm. Drain and let cool while you prepare the mussels.
Wash the mussels thoroughly, removing visible debris and beards; discard any with broken shells or that remain open after being tapped. Put them in a large pot with the remaining water, cover, and cook over high heat for 4 to 6 minutes, removing each mussel as soon as it opens so it does not toughen. Discard any that remain closed. Once cool enough to handle, remove one shell half and trim any remaining fibers, leaving each mussel nestled in its half shell.
Dice the red onion and seeded tomato into small, even pieces; finely chop the ají limo and cilantro. Mix them with the cooled corn, lime juice, vegetable oil, salt, and black pepper. Let it sit for only 3 to 5 minutes, until the topping is juicy and brightly acidic while still completely crisp.
Arrange the mussels on a platter and top each shell generously with the chalaca mixture, making sure every one gets corn, onion, and tomato. Serve as soon as you finish assembling so the lime does not soften the topping. The best bite has tender mussel, crisp onion, and just a little tangy juice gathered at the bottom of the shell. Done! Put the dozen in the middle of the table and see who gets the last one. 😌
