Put the frozen peas in a bowl and defrost. Clean and wash the iceberg lettuce, remove some beautiful outer leaves and line 4 cocktail bowls with it. Cut the rest of the salad into fine strips.
Wash and halve the tomatoes. For the sauce, peel and finely dice the onion. Wash the dill, dab dry and chop finely, except for a little for garnishing. Mix salad cream, yoghurt, milk, ketchup, onions and dill (except for a little bit for garnishing).
Season to taste with cognac, lemon juice, salt and cayenne pepper. Mix the shrimps, tomatoes, peas and salad with the sauce and pour into the glasses. Sprinkle with some cayenne pepper and the remaining dill.
Serve garnished with remaining dill.