The nutmeg tree is the only tree that produces two separate spices. The fruit contains a hard pit, which is a nutmeg, while the lacy red membrane which surrounds it, is mace. The delicate membrane is carefully peeled away from the shell of the nutmeg and spread to dry in the sun, fading from bright red to orangy-brown as it dries.Mace blade is a common ingredient in Northern European cooking, showing up in hearty vegetable dishes, cream sauces, winter squash dishes and sausages. In baking, mace can be used as a substitute for nutmeg; its mellower flavor is especially nice with fruits, delicate pastries, or pumpkin pie. Ingredients: Mace.