Sardine Salad 1 can sardine (in olive oil or water)1 tablespoon mayonnaise1 small onion (dice)1 teaspoon vinegar1 whole Scotch bonnet pepper (few slices)1 pinch ground black pepper Open tin of sardine and pour into bowl. Add vinegar, chopped onions, black pepper, mayonnaise and mix . Break up sardine while mixing.Use to make sandwich with bread.