What the Fluff? An American lunchbox icon is turning 100

Fluff turns 100 this year, and the marshmallow concoction that has been smeared on a century's worth of schoolchildren's sandwiches has inspired a festival and other sticky remembrances.

Every year, between 5 million and 7 million pounds of the sticky cream invented in suburban Boston in 1917 is produced and sold worldwide, although half the supply is bought up by New Englanders and people in upstate New York.

It came of age in the 1960s, when generations of schoolchildren started clamoring for "Fluffernutter" sandwiches - still made by slathering peanut butter and Fluff between two slices of white bread.