Ceviche de ostra is a type of Peruvian ceviche using oysters as the main ingredient. This appetizer is usually made with a combination of oysters, thinly sliced onions, diced bell peppers, diced tomatoes, minced coriander, lemon juice, oil, and salt.

The oysters are cut into pieces and mixed with the rest of the ingredients. The dish is left in the fridge to marinate for a few minutes, and it's then served immediately.