Question: Why Are Mini Burgers Called Sliders?
By: Melissa Peterman
Published: January 28, 2010

Where does the name sliders originate from? Why not call them mini burgers?

Answers:
Curt

From Wikipedia:  1921 — White Castle, Wichita, Kansas. Due to widely prevalent anti-German sentiment in the U.S. during World War I, an alternative name for hamburgers was salisbury steak. Following the war, hamburgers became unpopular until the White Castle restaurant chain marketed and sold large numbers of small 2.5-inch square hamburgers, known as slyders.
Melissa Peterman

Fascinating Stuff! I love when recipes have that kind of history! Thank you so much!