I actually came up with the idea from a combination of suggestions from many people. Quite a few, even from a holistic practitioner on one of the FB groups where I post, said to start with something small to get the digestive system going again. Then, about 30 minutes to an hour later eat something more substantial.
The idea to keep it fatty came from a lot of different sources explaining how carbs, especially fibrous ones, would be harder to digest so try to avoid those. Plus fatty foods do not spike insulin and are very easy on the system so it seemed a good idea, I think I remember a couple of people mentioning that they ate macadamias, which I love, and olives, which I love as well.
I can’t take all of the credit but a forum like this is invaluable as a resource in our metabolic hacking on this WOE.