Resistant Starch is a type of carbohydrate/starch that "resists" digestion, meaning it passes through the stomach & the small intestine relatively unchanged.  When resistant starch reaches the colon, it serves as a prebiotic fiber - meaning it is food for the good bacteria, helping to “seed and feed” good bacteria in the gut. 
 
Sometimes called “the skinny starch,” because resistant starch can benefit health in a number of ways, including supporting a healthy weight and digestion.
 
This book explains the benefits, how to incorporate it, and has delicious recipies!