Glass Roasters is a small coffee shop inside the parking lot of Tiong Bahru Market in Singapore. Milk-based coffees such as cortado and flat white make up the core of the menu, and long black is also available. The shop has only about 8 to 10 seats and three small tables, so the space is cramped. When orders pile up, a long line forms and the order gets mixed up, so you have to check it yourself.