Nutmeg is a spice made from the seed of the nutmeg tree, a native Indonesian evergreen tree that is the source of two popular spices: nutmeg and mace. Nutmeg is the inner seed, while mace is the red, lace-like substance that covers the seed. Nutmeg is a quintessential autumn spice, frequently found in fall desserts and beverages. It can also be used in savory dishes, such as butternut squash soup, and pairs well with cream- or cheese-based recipes like a vegetable gratin.