Spiz. Whey protein-based meal replacement/endurance fuel. I never get tired of it and never have blood sugar (bonk) problems when I use it.

Throw in the occasional cheeseburger, strawberry Kwik or Mtn Dew and I can go for days.

Maltodextrin is fine for short rides, but you really need fat and protein in the mix for anything over 6-8 hours.

YMMV (and probably will), but that's what works for me.

SP
OC, OR
RUSA 3481

ps - the only problem with being liquid fueled is I have to stop and pee a lot. Still working on that.