Most airline food is edible, and that's the best description for them.
Unless you fork out more money for business class, which in turn means they stuff you like crazy with gourmet style meals, else bring your own cup noodles or packet food on the plane.
Suggestion of the day: bring a microwave oven onto the plane and you can have microwave food sold at every petrol station in SG! Chicken Curry, Black sauce chicken rice, hainanese chicken rice etc etc
