Scald the shrimp
Scald the shrimp for 1 minute in boiling salted water. Then put them aside.
Prepare the lettuce leaves
Put the clean, dried lettuce in a bowl. Add a bit of the oil from the tuna tin, a pinch of salt and mix everything well so that the lettuce really captures the flavours.
Assemble the lasagne
Intersperse tomato slices between the lettuce leaves inside of the bowl.
Turn the lasagne over
Cover the bowl with a plate. Turn it over so that the lasagne remains on the plate.
Add the rest of the ingredients
Place some of the tuna fillets on top of the lasagne along with some asparagus and the shrimp. Decorate the outside of the plate with corn salad, some olives and tomatoes. Add a little cocktail sauce and serve.