That's not what the Toronto Life article says. It says:
"And that’s not all. With 165,000 square feet of new retail space planned at Union, “food and beverage will occupy approximately 65%” of that, according to Lawrence Zucker, President and CEO of Osmington Inc., the company responsible for leasing the city-owned retail spaces, most of them below-ground. Thirty thousand of those square feet—about the size of a floor of First Canadian Place—will consist of a St. Lawrence–type fresh market."
So 65% of 165,000 square feet (about 100,000 square feet) will be food and beverage, and 30,000 of those square feet will be a St. Lawrence style fresh market.
The people keep referring to Grand Central as inspiration, so I read this as suggesting Grand Central market, which is a St. Lawrence style fresh market with butchers, fishmongers, patisseries, green grocer, chocolate vendor, etc.