Nutmeg comes from an evergreen tree native to the Spice Islands near Indonesia, but has been cultivated throughout the tropics by both native cultures and foreign. Not only did native cultures find use for them in cuisine and medicine, nutmeg caused a fervor for the English, Dutch, Chinese, Indians, and pretty much anyone else who came in contact with it.
Nutmeg is the nut from the Myristica fragrans tree. The fruit surrounding the nut is often candied or turned into preserves, or juiced and turned into a “nutmeg” syrup. The aril around the nutmeg is the spice we call mace. Nutmeg, however, is the primary harvest.
Ground nutmeg is used when whole nutmeg is unavailable, or when you need copious amounts of it. Add to cream sauces, braises, pilafs, cakes, or near anything else.
A note: Nutmeg contains myristicin, a substance with psychoactive properties, but that also is used to treat depression. While toxic in large quantities, it would require a person to consume many tablespoons of ground nutmeg for it to become so. In the tiny quantities used for cooking, nutmeg is perfectly harmless.