Here's why so many restaurants in Toronto are making subs right now Stay in the loop Sign up for our free email newsletter. Unsubscribe anytime or contact us for details. Toronto restaurants are now serving their own takes on sub sandwiches, putting their artisan touches on a fast food favourite similar to the way some have with fried chicken and smash burgers. Like potato rolls and fiery Nashville Hot seasoning, the humble but mighty sub is currently enjoying some time in the spotlight as people look for convenient takeout meals. Jesse Fader was already riding the smash burger wave at Extra Burger, and has now opened up a sub concept called A1 Submarines.