By Kristi Alexandra In a time when $22 avocado toast is the norm, even going out for a casual brunch can feel pretty bourgeois. Fortunately for residents of Burnaby Heights, The Gray Olive Cafeteria has brought classic, casual fare to the neighbourhood — while still maintaining the class. Located at the corner of Hastings Street and Carleton Avenue, the cafeteria-style, 20-seat eatery opened its doors in February of 2017, serving up comfort food with a refined twist. Founded by brothers Brian, Steve, and Jeremy Wong, the trio of siblings attests they just wanted to dish up mouth-watering food that recalls simple home-style cooking. “We’re such a food-driven family,” Steve, the youngest brother, tells WestCoastFood at the Hastings Street eatery, “all of us are so food-driven. Our mom would cook all our meals and even my friends would come over just to eat dinner with us. All of us are just…