Boil the eggs for about 10 minutes. Quench, peel and let cool off
Stir together the sour cream and mustard. Season with lemon juice, salt, pepper and 1 pinch of sugar
Clean and wash spring onions and cut into very fine rings. Cut the eggs into slices. Layer both with ham slices in 4 glasses and always
put some mustard cream in it. Finish with a slice of egg, a blob of cream and some spring onion rings. Put in a cool place