First of all, the taste of the food in the canteen cannot be changed by one person. Indeed, no one can adjust. If everyone thinks it's acceptable, but she can't adapt, I suggest that she eat outside the canteen. It is best if the company can give corresponding subsidies within the system. If you can't, you can consider raising your salary or other methods, but be sure that she is the one you are looking for, or don't do things that violate the system easily, which is more dangerous.