How to get a free burger on National Cheeseburger Day

HOUSTON, Texas -- How about we celebrate National Cheeseburger Day with a free burger?

Yes. That's what we love about these national food holidays. Most of the time, it comes with a freebie.

Shake Shack is honoring this day with a cheeseburger delivery party for people who live in certain cities. Don't worry. Chicago is on that list.

Here's what you do:

If you don't already have it, download the Door Dash app. You must place an order for $12 or more to get free delivery and a free Shake Shack cheeseburger.

This is only available today between 11 a.m. and 2 p.m. in the following cities: Atlanta, Austin, Boston, Bridgewater, N.J., Brooklyn, Chicago, Dallas, Washington D.C., Houston, Los Angeles, Las Vegas, Long Island, Manhattan, Phoenix, Paramus, N.J., Queens, and Scottsdale, Arizona.

Lastly, you must use the promo code SHACK at checkout.