can you have jam?

i have tried several jams since i got sick, different brands and different fruits and sometimes im ok with a particular one and then the next time i eat it it gives me diarrhea. is jam just a bad idea and i should stop trying it until im healed or is it a specific jam that is okay and i just havent found it yet? what jam can you guys eat?

p.s.: im from europe so i probably dont have most if any american brands at local stores - but I'd love to hear what fruit or type you tolerate