Jason’s Deli Invites Fans to Design Its Next CreationAugust is National Sandwich Month, and Jason’s Deli is giving customers a chance to leave their mark on the menu. Starting Aug. 4, the popular brand is kicking off The Great Sandwich Search, a nation-wide contest asking fans to submit their best custom builds. The winning creation will earn a spot on the online menu as a limited-time offering this November, and its creator will score free sandwiches for a full year. “Sandwiches have always been at the heart of Jason’s Deli, and our guests are the real experts on what makes one great,” said Kim Collura, vice president of marketing. Buy Three, Get One: Order a sandwich across three separate visits to unlock a fourth sandwich for free.