I like to share this:
I explain how to get this.
You need an empty glass bottle. Then you put a little bit of alcohol inside and shake it with the cap on so the alcohol get vaporized in the inside, after that take the cap off and very fast put a lightened match in the top of the bottle, so a big flame will blow out (Be careful!!!). And with a remote control take the pictured for at least 2 o 3 seconds.
PS: Sorry for my poor English but im trying my best.
In the next days ill take more pictures with different bottles, I promise to upload.
Camera: Sony DSLR-A300
Exposure: 3
Aperture: f/5.6
Focal Length: 50 mm
ISO Speed: 800
Exposure Bias: 0 EV
Flash: Off