It was done with cooking oil at one time. Problem is it gave most of the test subjects diarrhea after eating a bag of potato chips that were fried in it. Of course anyone that eats a bag of potato chips is at risk of that anyway...
I can do that easily and will do so if somebody gives me a bag of chips. It’s not even a challenge ;)
Infinitesimally larger than when eating just about anything else.
Yeah, they are the ones that give me trouble.
That was when I learned about FODMAP, and I learned about the work Monash University is doing on that field: https://www.monashfodmap.com/
Hope that helps, but better if you don't need them!