Moist. Cold. Soggy. Not words you want to associate with your grilled cheese sandwich. Or anything edible, really. Nevertheless, they were adjectives that fit the fare of The Melt, a high-end San Francisco-based sandwich chain, whenever it tried to deliver hot grilled cheeses to hungry lunch customers. How were office-goers going to get their hangover cures?! So in September 2013, The Melt, which was launched by Flip founder Jonathan Kaplan (he sold his video camera company in 2009 for $590 million), put together an internal team of problem solvers charged with finding a way to extend the sandwich's woefully short shelf life. They discovered that each Melt had about seven minutes before going cold, leaving the cheese to congeal and making for a subpar grilled cheese-eating experience.