The coffee break

James Humes. Which President Killed a Man? Tantalizing Trivia and Fun Facts about Our Chief Executives and First Ladies. New York: MJF Books, 2003.
P 83: Which President is credited for helping to initiate the ‘coffee break’ tradition? “’Crullers and coffee’
The midmorning coffee break began to emerge mostly in Northern cities following the Civil War. The custom has spread through Union camps. Some social historians have credited a young William McKinley with starting this tradition… While waiting for his commission, he got the idea of taking around coffee in a cart to the soldiers who had been up since before six o’clock. Because of that, McKinley was made commissary sergeant at age nineteen. The ten o’clock coffee that the Ohio regiments had initiated under McKinley spread to Pennsylvania and then the Massachusetts regiments. That was the genesis of the coffee break.”