A lot of the Cheap eateries frequented by locals don't even have menus printed in English. Sure some have waiters than can converse in English and translate the menu for you. But if you run into one that doesn't then you'll undertake the risk of ordering something undesirable to your diet.

Anyways to keep things simple, just head into the food courts of the major malls and you'll find plenty of cheap eateries. Those such as the ones located in Festival Walk have plenty of choices from cheap local eateries such as Cafe de Coral aka Tai Ka Lok, Noodle Place, Spaghetti House, etc to name a few.

My all time favorite for light snacking after the long day in the office are those stalls selling Ka Lei Yu Tan (Fish Ball curry on stick).