Webjimmy john liautaud, founder of jimmy john’s gourmet sandwiches, is on a diet, he confessed to entrepreneurship students at the university of notre dame. Single protein and provolone served on 8” or 16 french, sliced wheat or unwich®, plus the veggie! After this time, the quality of the ingredients may start to deteriorate, and the sandwich may. Webthe precise length of a jimmy john’s sandwich can vary depending on the type of sandwich and the options you choose. However, most jimmy john’s sandwiches. Webthe recommended shelf life for a jimmy john’s sandwich is **24 hours**. Jimmy john’s sandwiches are made fresh to order, ensuring that you receive a delicious.