This was lit using a mixture of strobe & a dragged shutter. I used three novatron lights with a 7in reflector behind and below the glass. It was bounced off of a black seamless. And then two strips on either side of the glass to highlight edges. I would float rubbing alcohol on top of the water, light it on fire and immediated grab the shot. The flash fired immediately, but the shutter stayed open for a total of .8s to catch the glow of the flame.