How to make
Wash the lettuce, drain and dry it. Rip it into coarse pieces and place it in a suitable container.
Add the finely chopped onions, roundly sliced cucumber and drained fish.
Stir and season with a dressing made from the mustard, mayonnaise and lemon juice.
Stir and put it in the fridge for at least 20 min. Sprinkle with dill before serving.