Prepare the clarification
Skin and bone the duck leg and very finely chop the meat. Finely dice the celery, onion, leek and tomato. Combine these with the chopped meat and thyme in a saucepan. Peel the beetroot, cut a quarter of it into strips about 2.5cm/1 inch long and 3mm/⅛ inch wide. Finely dice the remaining beetroot and add it to the meat and vegetables. Add the egg whites and mix together well. Stir in the cold stock, check the mixture for seasoning and add salt and pepper as required.

