I don't think I've had any bad food experiences when traveling abroad. have enjoyed everything I've had in Korea, Japan, the UK, and Italy
That's what I feel for the most part, though I was very disappointed with food when I was in Cuba. That's obviously due to supply issues, but quality was very hit and miss and after a week it got very repetitive. Not to slam the cuisine itself, but having to rely only on local produce is very limiting.