Soup, soup, soup!!!
No, really, soup is great. So many varieties, homemade and shop bought in the fresh chiller section. Blend the daylights out of it and thin it to runny consistency with stock. I have had pumpkin, tomato, mushroom & chicken. The vegetable based soups I have added protein powder to, just a little. I made huge batches a month ago and froze them.....big mistake, I am never going to be able to eat it all before I am sick to death of it. The dogs are going to be getting chicken soup for their dinner shortly - they won't mind :)
Also drinking V8 Breakfast fusion juice - yummo! Tried the 'oats express' they were truly disgusting, gave them away. Peppermint Tea - very good for wind when first sleeved. Coffee, milo, tea etc.
Runny custard warmed up in the microwave with a dash of natural yoghurt to cut the sweetness - scrumptious.
Banana & peanut butter smoothie with added protein powder.
I love water and so far have only had a little trouble with it. Immediately post-op it was very heavy & hard. softened it with some apple juice or cordial. Now 11 days out I can sip it plain - thank goodness
Best wishes for your surgery
Sandy