I am on day 10 of a 14 day liquid diet. I get to eat 1 small calorie (300) meal/day plus 3 protein shakes/day. Yes it is hard. But I know the importance of taking care of the Liver....
I say try as many shakes as you possibly can to find one you like. There are TONS of them out there and they are all not the same. BariatricEating.com Netrition.com Unjury.com all have great sample packs to try. I think it's worth the investment to find something you can do, because post op...that's all you get for Phase 1 until Mush is added. or that's my Dr.'s plan. Good Luck!! I hear your pain.