I had tried the Salt and Vinegar chip recipe in Alissa's book but didn't like it with regular potatoes as the recipe called for, so I decided to try my own version with sweet potatoes (it's sort of a blend of her cheesy chips and the salt and vinegar ones):
1 Large sweet potato (or 2 medium ones)
1 cup apple cider vinegar
1-2 T Braggs or organic soy sauce
1/2 T salt
Slice sweet potato into ultra thin slices using a mandoline or food processor with ultra thin slicing disc. Mix remaining ingredients in a bowl to dissolve salt. Marinate sliced potato in liquid for 10 minutes. Put slices on dehydrator mesh and dehydrate until crisp. Save remaining liquid to repeat recipe with more potatoes.
I've only tasted them fresh so far and they're great, I can't wait for them to be done.