The original (all beef) is the best. I got the jumbo (chicken and beef) with sweet potato topping and ketchup & sugar. About $10.
They have an allergen menu displayed on wall near cash (not directly on menu though unfortunately). Their hot dog batter are dairy and egg free but contain gluten. I recommend sugar and ketchup toppings. This is better than the street dogs I had in Seoul. Wait times can be long at times.
300 Earl Grey Dr unit A10B, Kanata, ON K2T 1B8, Canada