What’s the valedictorian of an Ivy League school to do when working in finance right out of college wasn’t everything he thought it would be? Open a pop-up muffin shop, naturally. That’s exactly what Ben Gifford, who graduated from Dartmouth College in 2010, did when he started his muffin business, Double or Muffin, in San Francisco a few months ago. Double or Muffin, however, is not your average pop-up shop. After customers purchase a muffin (they only cost a dollar!), they get to flip a coin. Heads: you get another muffin of your choosing for free. Tails: you keep the muffin you already have. Hence, double or muffin. Find out what goes into running a prosperous bakery, and get one of Ben’s top muffin recipes after the jump.