Mejillones a la vinagreta

Mejillones a la vinagreta is a traditional dish originating from Galicia. It's made with a combination of local mussels, red wine vinegar, olive oil, green and red bell peppers, onions, and salt. The mussels are steamed until the shells open, drained, and cooled. The empty part of each mussel is discarded. The olive oil is whisked with vinegar, and the combination is then seasoned with salt and mixed with onions and bell peppers. The mussels are arranged on a platter and a spoonful of the pepper mixture is placed into each shell. It's recommended to refrigerate the dish for half an hour before serving and pair it with a cold beer on the side.