*The largest donut ever made was a 1.7 ton American-style jelly donut. It measured 16 feet in diameter and 16 inches high in the center.
*Boston is home to the most donut shops per person.
*More than 10 billion donuts are made in the U.S. every year.
*The hole in the donut's center appeared in the first half of the 19th Century and allows the donut to cook more evenly.
*The first donut machine was invented in New York City in 1920.Craving a donut yet? Satisfy your sweet tooth with these amazing donut deals...
*Krispy Kreme is offering one free donut of any variety.
*Dunkin' Donuts is offering one free donut with the purchase of any beverage.
*Enter the Entenmanns sweepstakes for a chance to win free donuts for a year.
*U.S. chains of Tim Hortons are offering a free donut with any purchase. Make sure to say "Happy National Donut Day!"
P.S. National Donut Day 2012 and 2013.
P.P.S. Mouthwatering donut recipes...
[Blackberry jam and custard donuts photo from The Sugar Hit; comic via Some-ecards]