We cook our sweet potatoes kettle style into sweet & crunchy chips! Dirty Sweet Potato Chips are: gluten free; cooked kettle style in peanut oil. Dirty Potato Chips are craftfully cooked kettle style by our chip masters and use only premium ingredients for a crunchier, tastier chip. We thank you for purchasing Dirty's. Facebook: (at)DirtyPotatoChips. Twitter: (at)realdirtychips. Instagram: (at)realdirtychips. Call mail order at: 1-800-367-7629 during business hours or order online anytime at: www.dirtys.com.