CRP and fecal calprotectin. The meal consisted of well-boiled meat (pork/beef/chicken together, slow cooked, overnight), and carrots, zucchini, and butternut squash cooked in its juice until it mostly wasn't soup anymore. Picked things that were very soft/easy to digest, with at least some nutritional value, because it didn't bother me. I just wanted to buy time for things to calm down.

It was meant to be an elimination diet with reintroduction, but every reintroduction attempt failed miserably for 20 months. Then, suddenly, it was fine.

I still mostly eat food I would recognize in its ingredient form instead of highly processed stuff, but if everybody's going out for pizza, I can have a couple slices and be fine. I just can't do that all the time.