I am co-ordinating a cookout at a student's house for my honor society students tomorrow evening. I bought hot dogs, hamburgers, chicken parts, & portobello mushrooms to try to cater to all different diets. I know when I do bone-in chicken on my grill at home, I parboil it first so it doesn't take so long to cook on the grill (especially since dogs & burgers cook so quick). I seem to recall hearing somewhere, though, that once you've started to cook any meat, if you don't cook it completely right away, harmful bacteria could develop which would not be killed if you decided to wait and finish cooking it later. So my question is, can I parboil the chicken tonight and refrigerate it, then bring it to the cookout tomorrow & grill it, or would that be unsafe? Thanks for any advice you can send my way.