Cloves are the flower buds of the clove tree, an evergreen also known as Syzygium aromaticum. Found in both whole and ground forms, this versatile spice can be used to season pot roasts, add flavor to hot beverages and bring spicy warmth to cookies and cakes. You may know cloves as one of the main ingredients in gingerbread baked goods or a staple spice in Indian cuisine. In addition to their sweet, aromatic flavor, cloves are known for their potent medicinal properties.