Friday is National Donut Day

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Hot Krispy Kreme donuts roll down the production line.

There’s a hole lotta happy on the way. Friday is National Donut Day, traditionally celebrated on the first Friday of June.

Started by the Salvation Army in Chicago in 1938, the day honors the group’s “donut lassies,” who served treats and provided assistance to soldiers on the front lines during World War I.

Doughnuts have been around since long before the First World War, and we have the Dutch to thank for them. The Dutch would make “olykoek,” which translates to oily cake. The first Dutch doughnuts didn’t have a hole, but they were fried in hot oil and the dough was sweet.

It wasn’t until 1847 that the holed-out doughnut we know and love today appeared. Hanson Gregory, 16 at the time, claimed credit. Sick of doughnuts with a raw center, he used a pepper pot to punch out holes to help his doughnuts cook more evenly.

By 1920, Adolph Levitt, a Russian living in New York, had invented a doughnut machine. Thirteen years later, doughnuts were proclaimed the “Hit Food of the Century of Progress” by the World’s Fair in Chicago.

CNN contributed to this report.