Ryba po grecku is a traditional fish dish originating from Poland. Although there are variations, the dish is usually made with a combination of fish fillets (cod, haddock, tilapia, perch, pike, etc.), carrots, celery, leeks, parsley, onions, oil, tomato paste, lemon juice or vinegar, bay leaves, paprika, salt, and pepper.

The fillets are seasoned with salt and pepper, fried in oil on both sides, and set aside. The carrots and celery are grated and mixed with the other chopped vegetables before the mixture is sautéed over medium heat until soft. Near the end of cooking, the rest of the ingredients are stirred in and everything is sautéed for a few more minutes.

The fillets are placed in a glass dish and topped with the vegetables. The process is repeated until everything is layered and used up, and the dish is then served hot or cold. Ryba po grecku is traditionally served on Christmas Eve as an appetizer, ideally with bread and butter on the side.