Gluten-Free Confidence Score: 9/10
Sweet potatoes are naturally gluten-free. The only problem that arises is in how they are prepared. For example, are they prepared in an area or on a surface that is shared with gluten-containing ingredients? Are they fried in a deep fryer that also fries foods that contain gluten? These are the types of questions you need to find the answer to in order to determine if sweet potatoes are gluten-free.
[Updated: June 2016]