A few tips for those who are interested about taking this kind of photos
- get close, and try to have different depths in the shot (foreground, object, background)
- don't get too close, so you don't burn your lens. 100-200mm will usually be fine (I use 135mm often).
- if you place the bottle near/on flame, pay attention to it's heat level. The glass won't heat instantly, but it will get hot if you keep it in the flames - and it can affect the taste of the dram as well.
- use of assistant is highly recommended.
- plastic will melt when in contact with the fire
- fire and smoke need to have some action, a small amount of smoke does not do it usually.
- experiment: take lots of shots using different angles and speeds. I usually have a very big aperture (f2) combined with mid-tele (135mm) to mystify the background.