Wedding season in the Northern Hemisphere is already in full swing, which means a lot of guests will soon be going home with small net bags of tooth-breakingly hard candy-coated almonds, the wedding reception equivalent of candy corn. Some of the guests will joke about how they're old-person candy and must have been sitting out for years to get so hard.
And in fact they are old—one of the oldest confections in the world. Those candy almonds, confetti, are the Italian sweetmeat for which paper confetti is named—small, bright colored, and thrown like Mardi Gras beads at Renaissance parties.
Source: http://www.atlasobscura.com/