The street food on the weekends is great for those looking for some Korean comfort food. They offer Mung Bean Pancakes with Kimchi, Lo Mein, Fried Rice, huge Egg Rolls and Chicken Skewers. True, some of these items are not Korean, but the Mung Bean Pancakes are as Korean as they get. I was surprised they offered this (rather than the more common seafood pancake) because it takes more effort to make; the base is not flour origin, but of mung bean origin, so maybe it's healthier for you. The ladies working the grills are nice and remind me of the vendors I saw in Korea.
The grocery is not really well stocked as others have mentioned. This is probably due to the low foot traffic due to it's neighbor, Lotus. I usually grab certain essentials at Lotus and get my Korean-specific items here. You should be able to find what you need.