Why You Can't Just Substitute Yams With Sweet Potatoes - Chowhound

Real yams can be difficult to find in the U.S. unless you visit an international or specialty grocery store, so to learn more, we should seek out where they're commonly cooked. Since 95% of yams are grown in Africa (via Library of Congress), the root vegetable is a staple food throughout the continent, especially in Nigeria, which cultivates more yams than any other country. Advertisement Common varieties of…