Color: Black olives have a deep black or dark purple color. However, it's important to note that some olives labeled as black may actually be dark green or dark brown due to different curing methods Size: Black olives come in various sizes, ranging from small to large. Common sizes include small (e.g., olives), medium (e.g., olives), and large (e.g., olives). Flavor: Black olives have a rich, slightly salty taste. The flavor can vary depending on the specific type of black olive and the curing process used