Peel the potatoes. Peel asparagus and cut off woody ends. Wash both and cook separately in boiling salted water for about 18 minutes. Remove 150 ml asparagus water, stir in Bindefix and cream.
Season with salt, pepper and lemon juice. Stir in chopped parsley. Arrange asparagus, potatoes and ham on a plate. Pour sauce on the asparagus. Garnish with parsley.