Trial and error is your best bet because everyone is different. Did you have surgery 2 weeks ago? If you're feeling ok (ie no stomach/intestinal pain) then you're probably going to be ok eating things other than soup. If you're nervous about introducing new foods try something like mashed potatoes, oatmeal, applesauce, etc. Honestly though, you can probably eat pretty much anything at this point. The first meal they brought me in the hospital after my surgery was a cheeseburger, and that was 2 days after my surgery. When I came home I was still scared of eating things like fruits, veggies, and nuts because they had caused me so much pain in the past. But I got over that pretty quickly because I love salad.
Start out slow, try small amounts of new foods and see how they affect you. Use common sense about what you can indulge in and what you should avoid if possible. If I eat beans or broccoli I only eat a little bit because I know they produce gas, and a bag full of gas is hard to hide under clothes, haha. I try not over do it on nuts, mushrooms, and corn because I worry that too much of that will cause a blockage (but I still eat nuts every day because they're amazing for forming stool).
I guess some peoples' surgeons put them on a low residue diet after surgery, but I have no idea what that is. My surgeon never mentioned it, and actually gave me the ok to eat anything I wanted as soon as I was off the liquid diet. So take everything anyone says with a grain of salt and find what works for you.
Ulcerative Colitis since December 2001 (age 15)
in remission for 6 months in 2002 followed by severely active disease
1st j-pouch surgery done on July 30, 2008