Timbale of potatoes and Manchego cheese

Peel the potatoes and cut them into thick slices. Boil them until they are al dente (without being soft) and let cool. Meanwhile, we cut the Manchego cheese into thin wedges, and the onion into thin slices. We alternately place a portion of potato and a portion of cheese accompanied by the lettuce and the purple onion. Finally, we dress it with a vinaigrette based on olive oil, Modena vinegar, chopped nuts and salt.