Caviar is a delicacy consisting of processed salted eggs of different types of sturgeon, a large, prehistoric fish found in the Caspian and Black Sea regions. It is considered one of the most expensive foods in the world due to its rarity and high demand. The eggs vary in size and color, with the most sought after being the beluga sturgeon's white or light gray eggs. Caviar is traditionally served chilled on its own or as a garnish on high-end dishes. It is also known for its health benefits, being a rich source of Omega-3 fatty acids, vitamins, and minerals.