Although Health & Safety would probably like to make such a guideline, it seemed unlikely. "If that was the case every chip shop in the country would be closed," Hermione pointed out. "They hardly no what salad is unless it's haphazardly stuck in a kebab."
Hermione frowned at the dish offered by Ron, a frown which deepened when she realised it was one she especially liked. "Maybe I want variety!" she snapped, scooping up the lid from Ron's choice as she spoke. It was- something she didn't want. Damn. As grouchy as she was from hunger and stress, she did not feel inclined to concede the point, but she also did not want to force herself to eat something, even for spite.
Unfortunately she didn't give much thought to her expression, which would be easy enough to interpret as chagrin at having kicked up a fuss over a dish without looking at it first. But Ron, shuffling about in clear reluctance, offered to share anyway, and Hermione deflated. "No, I'll have this one, and some of this. But you're cleaning that up!" she said, jabbing at the spilt rice with a fork.