First cut the rolls into slices and brush 3/4 of them with butter. Place smoked salmon on half of the slices and place trout fillet on top of the rest and brush the remaining bread rolls with wild garlic cream.
Cover the smoked salmon and trout fillet rolls with egg slices and cocktail tomatoes. Top the wild garlic cream rolls with strawberries and grapes.
Arrange nicely on a platter.
You can also vary it, for example with radishes or paprika.