Just got diagnosed with Ulcerative Colitis

Risotto is a great flare food, as is all rice (not brown). I can't suggest any specific diet, but cutting gluten helped for my first flare, but didn't stop the second one from coming.

The internet is full of different stories for a reason - everyone is different. One person gets better from a Vegetarian diet while someone else does better on a Paleo diet. Some people aren't effected by junk foods but get worse on healthy foods. Some have to avoid dairy and gluten while others don't. There is no such thing as a UC diet. You have to figure out for yourself what works and what doesn't in you and it can take months, even years to figure it out. Copying what one person does isn't any different than playing craps. You might get lucky and you might not. My best advice is to not take anything for granted, such as eating Salmon. It can be high in histamines, which would make me worse. My system likes burgers and fries and popcorn, although that doesn't mean I make a regular habit out of eating them. You can't just assume that eating healthy will be good for UC. I can't overdo the healthy choices or I will get worse.

Your right they don't because they would be a maintenance dose. Not the amount to take if you were flaring.