Jason’s Deli is asking guests to be co-creators of its next sandwich. The Beaumont, Texas-based fast casual chain launched The Great Sandwich Search Tuesday, inviting fans to submit ideas for what could become a limited-time menu item in November. Jason’s Deli is also offering exclusive National Sandwich Month perks through its Deli Dollars loyalty program. Those include double points on sandwich purchases every weekend throughout August, and the chance to earn a fourth sandwich free when a sandwich is purchased on three separate visits to one of the restaurants. No purchase or Deli Dollars membership is required to enter The Great Sandwich Search.