By NiseriN / Getty Images Apple, bacon and seafood… these are just a few of the on-trend ingredients that appeal to consumers in the form of the limited-time offers and special feature creations at restaurant chains and fast-food restaurants. They may be a marketing stunt but these short-lived menus and sandwiches are a favorite among customers, and therefore the businesses. Often a way for companies to innovate on their menus, plant-based protein alternatives and chili peppers look set to be the star ingredients of future ephemeral creations. Apple, bacon and seafood… these are just a few…