This is the compensation effect. 
It’s real!
Ghrelin release is a trained response. So SIU for a week or so and you’ll interrupt the periodic release of ghrelin at that time that’s making you hungry. Eating just a little bit or eating raw broccoli or whatever will just prolong the discomfort.
Anecdotally, I’ve heard from folks that fast every other day for some extended period of time, then go on a multi-day fast…I’ve been told that they will continue to get hunger pangs on that same 48 hour cycle. So apparently ghrelin release is not even bound by the usual circadian rhythm that waking & sleeping is.