COVID-19 Updates A1 Submarines is open for takeout and delivery. Masks are mandatory and hand sanitizer is at the counter. A1 Submarines offers a menu of cold cut and eggplant subs from its location at the back of its sister restaurant, Extra Burger. The sandwich shop is situated on the quiet residential side street of Dovercourt in what used to be storage space for the Dundas West burger joint. The low ceiling and wall panelling, as well as the signed posters of Wayne Gretzky, Mike Tyson, and the Dave Matthews Band all contribute to the uncanny feeling that you've just walked into somebody's basement.