S'more

A traditional campfire classic consisting of a roasted marshmallow and a layer of chocolate placed between two graham crackers - that's s'more, its name derived from a contraction of the phrase "some more", because everyone who tasted it was instantly hooked.

The credit for the invention of this delicious nighttime snack goes to the Girl Scouts, who first published the recipe in their 1927 book called Tramping and Trailing with the Girl Scouts. That same recipe was credited to a woman named Loretta Scott Crew.

The enduring popularity of s'mores is best explained by a few crucial facts - they're easy to make, induce a large dose of nostalgia, and are in the reach of any parent's budget. Today, there is even a National S'mores Day, celebrated every year on August 10.