Wash the potatoes thoroughly and cook covered for about 25 minutes
Cut the cucumber into thin slices. Wash and finely chop the parsley. Peel onion and chop finely. Whisk egg, 2 tablespoons of water, salt and pepper
Heat the fat in a small coated pan. Brown the onion and ham in it. Stir in the egg and let it set
Drain the potatoes and break them open a little. Scramble eggs on the potato. Sprinkle cucumber and parsley over it