Czech Kohlrabi Baked With Ham

1/2 cup butter
8 kohlrabi, diced
salt and pepper
1/2 lb chopped ham
1 tablespoon minced parsley
3 egg yolks
1 cup cream
2 tablespoons flour
1 pinch mace

Melt 6 tablespoons butter.
Add kohlrabi and sauté 10 minutes.
Grease baking dish with remaining butter.
Put in layer of kohlrabi then layer of ham and parsley; season.
Repeat layers.
Ending with kohlrabi.
Mix egg yolks in cream and flour seasonings.
Pour over kohlrabi.
Bake at 350° oven for about 30 minutes.