I'll look for something Tim Steele has about RS. The cooling and reheating increases RS each cycle. It's related to fiber, and does a great job feeding and ameliorating healthy gut bacteria. Other starchy foods can do this do, like rice, but there seems to be a bit of potato magic in there.
For those that want more:
Aussie Andrew Taylor did it for a whole year, losing 50 kg:
spudfit.com
His approach is that of addiction. Unlike other addictions, a food addict can't really stop eating. So Taylor looked for the closest thing he could find.
Tim Steele wrote the book, literally, and was front and center when it went viral in paleo-land a few years back.
PotatoHack.com is your portal for learning how to use the Potato Diet to lose weight.
potatohack.com
The "Potato Hack" is to eat nothing but potatoes, as plainly as possible for a short time, usually 3-5 days. Maybe a bit longer, maybe with a few spices or condiments that add trivial calories.
Other versions of the potato diet are to simply make the potato the basis of all meals, and the major source of calories. Dr. McDougall has been teaching this for years, calling it "Mary's Mini" after his wife, who used to do something similar to stay skinny while in college. He also frequently gives examples of similar research experiments done decades ago, as well as historical examples of populations that have relied on the potato.
The paleo uproar was always funny to me because they acted like they reinvented the wheel. Some of us had been rollin' along for awhile!
The point of all variations is to introduce a little monotony, stop amusing yourself with food, looking for "hits" for your brain, and tune into true hunger and satiety.
So I'm starting with the simplest variation for the brain reset, then adding more flavors later.