The idea for a bulgogi burger came to me last summer when I was thinking about entering a burger grill-off/competition. Little did I know that the "Bulgogi Burger" is already a standard menu item on fast food burger joints in Korea. I was slightly disheartened, since my idea wasn't original, and scrapped it for the competition.
But I never forgot about making it myself. I've never actually tried a bulgogi burger in Korea (it's been about 15 years since I've been there), and decided that I didn't want to know how it is made in tha' Motherland. I wanted to come up with my own. Besides, someone also told me that many "Bulgogi Burgers" are not burgers at all - they are real pieces of bulgogi slapped between the buns. Who knows? I didn't care.