This supermarket is a bit out of the ordinary. It is a continous stream of stores and shops connected with one another.
One side you have the food court/take out area. The food is great and fairly priced.
Next to that is the supermarket where you can get your everyday goods. Nothing too special about this place except you can find more ramen choices then the usual supermarket.
Next to that is a bakery where they bake fresh goods on a daily basis. Highly recommended.
To the left of the bakery is a butcher shop with meat that you wouldn't usually find at a normal shop (ie. marrow etc) and the prices are very fair.
Finally you have a quick serve sushi restaurant on the far left of the plaza. This place servers great sushi and allows you space to sit and eat. It's about time you get to find your usual rolls without having it owned by a korean or chinese family.
Keep in mind that coming to this area is a bit of an issue. It's located in a plaza where you must go from steeles to get to. You can't go straight from the ING building and there's lot s of traffic during business hours. The parking lot is pretty full during the day.
Either way it's recommended to visit. Definitely a different scenary compared to the usual chinese plaza's (ie. metro square and pmall).