Resistant starch is a type of carbohydrate that doesn't get digested in your small gut. Instead, it ferments in your large gut and feeds useful intestine bacteria.
Resistant starch functions in addition to soluble, fermentable fiber. It allows feed the friendly bacteria to your intestine and will increase the production of quick-chain fatty acids such as butyrate
Discover them
Oats
Cooked and cooled rice
Raw potato starch
Some other grains
Beans and legumes
Cooked and cooled potatoes
Green bananas