Christmas Eve - Dish 3 - salad with smoked fish and mushrooms.

1 smoked mackerel or other fish
150 gram of fresh white mushrooms
1 apple
1 small onion
3 large gherkins
2 tbsp of olive oil
1 tbsp of lemon juice
salt black pepper

Clean the fish from skin and bones and divide into small pieces. Peel and grate the apple and sprinkle lemon juice over it. Cut the onion and gherkins into small cubes. Clean the mushrooms and cut into thin slices. Put all ingredients into a bowl, add oil, salt and pepper and mix well. Put the salad into the refrigerator for minimum 1 hour. Serve cold.