I used a party strobe with an adjustable flash rate. I also put a blue filter on the front to cast things in a slightly unique tone.
I created the smoke with some standard issue Nag Champa incense.
Apparently using a blue filter with auto white balance in my raw editing program tricked it into making everything purple.
I really like the result and I am not exactly sure what is happening to the smoke. If I had to guess I would say that the smoke had filled the underside of the spoon and was forced out by smoke air movement. The concentric edges of smoke are from the flash firing multiple times in this 0.5 second exposure.