So I had emergency surgery to remove a failing/dying gall bladder at 23, so my experience may not be the same as others.
Absolutely nothing fatty or fried. About a year later I was able to have more organic fatty food like peanut butter, but still have issues with anything fried. Some other things to avoid for a couple weeks would be red meats, anything super cheesy like Mac and cheese, ice cream, things with a lot of butter, etc. I’d also avoid overly acidic things like orange juice or lemonade.
I liked having popsicles on hand after my surgery. The surgery can make your throat hurt if they used a breathing tube during it and it is a huge relief. Gatorade was good too for the electrolytes. More bland staple foods liked cooked chicken, pasta dishes light on cheese. Fresh fruit that is a bit easier on the stomach like strawberries and pears are good.