I love Asian supermarkets because of all the prepackaged/prepared food options, and Galleria is no exception.
We got some KFC (Korean fried chicken) from Mom's Chicken, a freshly made jajangmyeon (noodles with black bean sauce), prepackaged Korean rice balls, and a box of taiyaki from Kevin's Taiyaki. Portions were generous for the prices and everything was super yummy, even when eaten as cold leftovers!
There's also a buffet and a bakery section that I didn't get to try so will definitely be going back.