Question: what is a big yam?
Answer: Over 600 varieties of yams are known, and 95% of these are still grown in Africa. Compared to sweet potatoes, yams can grow very large. Size can vary from that of a small potato to up to 5 feet (1.5 meters). Not to mention, they can weigh up to an impressive 132 pounds (60 kgs) ( 2 ).