Foods that dissolve in the mouth, like crackers, chips, rice, or pasta, are fermentable carbohydrates, unlike fibrous foods such as broccoli which feed beneficial bacteria.

“think of um carbohydrates or foods for that matter that if you put them in your mouth and you just kind of kept them there for a little bit that they would dissolve like a cracker yes uh like a chip uh like rice like a piece of pasta as opposed to like a piece of broccoli which would get soggy but it's got a lot of fibrous material so it doesn't uh dissolve in the mouth and interestingly broccoli or Prebiotic fiber is what feeds the good bacteria”