Unfortunately it's not that simple of a translation either. I've logged the creation and output of cooking many times, and the stars are not directly linked to the quality number like that.
I thought they were before testing, but it doesn't even seem to be a simple range. If it is a range at all, then the various ranges overlap. Perhaps the quality indicates the max roll for another number that then determines stars, which would explain all the overlap.
Nope, it's easy to tell if you have quality mod on, 90 ish quality food is 5*, 99-100 is best server dish. Can't remember exactly, been a while since i cooked anything.