"Otto has a number of locations around the Boston area, including this full-service one in Coolidge Corner and others that offer counter-service. Most of the pies can be served with a 12-inch gluten-free crust, including the New Haven-inspired favorite topped with mashed potato and bacon. The restaurants recommend this option for diners with a sensitivity to gluten but caution that the pizzas are not recommended for people with celiac disease." - Celina Colby