Hard boil the eggs for 8-10 minutes. Then rinse with cold water, peel and slice. Meanwhile clean and wash the peppers and mushrooms. Cut long peppers into rings, mushrooms into thin slices.
Clean, wash, pluck or cut salads into small pieces. Turn roast beef into small rolls. Mix the prepared salad ingredients. Arrange with the rolls in portions. For the sauce, quarter red peppers, clean, wash and dice very finely.
Finely dice the gherkin as well. Mix paprika and cucumber cubes, mayonnaise, cream and ketchup. Season to taste with salt and pepper. Pour over the salad.