Wash the potatoes and boil in water for about 20 minutes. Then drain, rinse and peel. Let the potatoes cool down
Clean the mushrooms, clean them thoroughly, wash if necessary and cut them into slices. Peel and chop the onion. Cut potatoes into slices
Heat the oil in a large coated pan. Fry the potatoes in this pan until golden brown, turning occasionally. Fry onion and mushrooms for about 5 minutes, season
Whisk eggs and milk, season. Pour over the potato mixture. Allow to set at a mild heat, pushing together a little with the spatula from time to time
Arrange a farmer's breakfast. Cut the ham into strips and sprinkle on top. Garnish with gherkin fan, parsley and tomato