Pizza has recently edged out chocolate as America’s favorite food. No real surprise given pizza’s place in the fabric of our culture.  Comedy Central’s  John Stewart continually battled with Chicago over whether New York’s pizza is best. And New York mayor Bill DiBlasio has received more criticism for eating pizza with a fork than for delays in snow removal. Most all of us maintain a fierce loyalty to our favorite pizza, a devotion that can last for a lifetime and survive long after we’ve dep...