Video audition.
Shoot the video. Edit the video. Show video to the founders. They wanted a cooking video similar to what Buzzfeed produces in their Tasty series.
They had some basic video equipment, but I brought my own. They had the ingredients and some display stuff in a conference room. I spent a bit over an hour shooting the video, then about 45 minutes editing it.
I actually had fun doing this. I did reveal during the interview process that I probably would be bored after six months of doing cooking videos exclusively, and was looking for more growth potential. Looks like a decent place to work and they founders seemed nice.