By Jose Serrano (staff@latinospost.com) | First Posted: Jun 05, 2015 11:53 AM EDT

Once a year, we get to unleash the inner Homer Simpson inside us an feast on doughnut upon doughnut without having to pay a dime. This Friday, June 5 is that day as shops across the country take part in National Doughnut Day.

The event's history isn't as sweet as one would think. It began on the battlefields of France during World War I when the Salvation Army's "Doughnut Dollies" would hand out hundreds of coffee cups and doughnuts on a daily basis.  Veterans still recollect burrowing into trenches as the delectable treats were handed out.

The pastries didn't gain much popularity in the United States until the early 1930s when New Yorker Adolph Levitt perfected his doughnut machines, earning him somewhere near $25 million a year. Soon they hit the World's Fair in Chicago, and received air time in a Clark Gable film. Just like in World War I, doughnuts became soldiers' go-to treats during World War II. They were an airy, cost-effective solution for both veterans and citizens surviving the Great Depression.  

National Doughnut Day picked up steam in 1938 and hasn't lost traction since. Chicago's Salvation Army still hands out doughnuts on the first Friday in June, though they ask for small donations in return.

Let's take a look at some places taking part in the delectable holiday on June 5.

Salvation Army Chicago

Radio personalities from The Mix 101.9 FM will be on hand giving away free doughnuts from 3 p.m. to 7 p.m. Friday and 11 a.m. to 3 p.m. Saturday. All the Salvation Army asks in return is for a donation either made online or by mobile phone.

Entenmann's

Entenmann's and the Salvation Army are teaming up free treats and a chance at free doughnuts for a year, among other prizes. The company will donate $1 for every contest entry.

LaMar's Donuts

LaMar's Donuts is also partnering with the Salvation Army to offer free doughnuts. No purchase is necessary but donations are encouraged.

Krispy Kreme

Head into any Krispy Kreme location nationwide for a free doughnut of your choice. The offer is also available in Mexico and Canada.

Spudnut Donuts - Los Angeles

 Known for their potato flour doughnut, Spudnut will offer a free dessert with any purchase.

The Donut Man - Los Angeles

All purchases, except strawberries, will be 10 percent off.

Donut Snob - Los Angeles

Mini doughnuts will be $1.75 each and deliveries will be 50 percent off.

Doughnut Plant - New York City

Each customer gets one free carnival sprinkles mini cake doughnut with an order. This will be only day Pistachio yeast doughnuts will be available.

Dough - New York City

 Buy a box of six or more pastries for a chance to win free doughnuts for a year.

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