Dry sea scallops, cut into small cubes
½ cup fresh lime juice (about 4–5 limes)
1 Tablespoon ají amarillo paste
¼ small red onion, very thinly sliced
2 Tablespoons chopped fresh cilantro
½ teaspoon kosher salt, or to taste
¼ teaspoon black pepper
1 Tablespoon olive oil (optional, for richness)
Tostadas or plantain, corn, or sweet potato chips for serving