In honor of National Chocolate Chip Cookie Day on August 4, we’ve compiled a list of four facts you probably didn’t know about chocolate chip cookies:

The invention of the chocolate chip cookie was an accident.

In 1938, Ruth Wakefield, who worked for the Toll House Inn, attempted to create a chocolate cookie by dropping in Nestlé semi-sweet chocolate chips into her butter drop cookie batter. Instead of melting and making chocolate cookies, the pieces held their shape to form what we now call the chocolate chip cookie.

But, it wasn’t always called a chocolate chip cookie.

In fact, when Ruth Wakefield first invented the cookie and added it to her Toll House Tried and True Recipes cookbook, the cookies were called chocolate crunch cookies.

The cookies became popular during WWII.

As more soldiers went off to war, families began to send care packages. Those from Massachusetts included chocolate chip cookies, which spread awareness, leading more soldiers to write home requesting them as well.

Milk and chocolate chip cookies are a perfect combination.

There’s a true, scientific reason why so many people love the combination of milk and cookies. You can read about it in Reader’s Digest!

No matter what you call them or how you eat them, chocolate chip cookies are delicacies to be enjoyed and celebrated. Take advantage of National Chocolate Chip Cookie Day and order a batch for your office, your tenants or your family.