Whisk eggs and milk and season with salt. Cut ham into strips and fold into the eggs. Heat 10 g of fat in a small pan and let the scrambled eggs fry in it at medium heat.
Occasionally push together to the centre using a spatula. Spread the remaining butter on the bread and cover with the scrambled eggs. Sprinkle with pepper and cress. Arrange bread on salad and serve garnished with tomato quarters and cress as desired.