Okay, so cutting sweet potatoes can be tough because they're hard and stringy. You need a knife that's sharp, stable, and easy to handle. **Top Pick: A Good Chef's Knife (8-inch)** A chef's knife works best because it's useful and does the job. The wide, sharp blade and curved shape let you press down easily to cut the potato. It's long enough to cut large potatoes in one go, so y... https://knivesarea.com/best-knife-for-cutting-sweet-potatoes/