Subway testing meatless meatball sub
(CNN) - Subway is exploring the plant-based protein trend with a meatless meatball sub. The Beyond Meatball Marinara sub will be available for a limited time. Burger King will start serving a meatless version of its Whopper, featuring a patty made by Beyond competitor Impossible Foods, nationwide this week. For restaurants, testing out the products is a way to cash in on a fast-growing trend. Beyond and Subway worked together to develop the Beyond Meatball, which is only available at Subway restaurants.