However, what we do know for sure is that nearly 140 years after the two nuns started selling the sweet treat in Nancy, the macaron was transformed. In 1930, Pierre Desfontaines, a Parisian pâtissier, took two traditional macarons and sandwiched them together using ganache, creating the famous "Paris" macaron that can now be found all over the world, everywhere from the finest pâtisseries to McDonald"s.