Herb Glaser, grandson of the founder, says Glaser's doesn't claim to have actually invented the black and white. The black and white was mainly a New York thing, until it was featured in an episode of Seinfeld called "The Dinner Party." Once America discovered the black and white, Glaser's basked in the attention received by the cookie. They'd rather close, and sell the building, where "John Glaser Inc." is inlaid in blue and white tile in the bakery floor. He cautions that anyone who's tempted to get into the bakery business must be completely dedicated to the task.

Source: Forbes May 06, 2018 15:33 UTC