Dioscorea trifida is a starchy root vegetable, also known as cush-cush, tatuma, and sweet yam. It is commonly found in tropical regions of South America and the Caribbean. The plant is a perennial vine that climbs up trees and produces tubers that are harvested and used in many different dishes. Other names for Dioscorea trifida include cush-cush yam, yampi, and wild yam. It is often confused with other varieties of yam, such as sweet potato and taro, but it has a distinct flavor and texture that sets it apart. Regardless of what it's called, Dioscorea trifida is a delicious and nutritious addition to any meal.