Which Wich Sandwiches is known for its revolutionary ordering system. Guests use red Sharpies to mark up pre-printed menus on sandwich bags. They select a sandwich from one of 10 categories, and then choose the type of bread, size, cheese, spreads, and vegetables. The sandwiches are prepared to guests’ exact specifications and delivered in personalized sandwich bags. After they’ve enjoyed their wiches, guests are encouraged to draw on their bags with the same red Sharpies and hang their “artwork” on the community wall.