I need advice about creating/photographing fire for a studio shot I'm setting up. I thought about using alcohol as the fuel, but I think that will produce more of a blue flame if I remember my high school science correctly.
I really need an orange flame like the kind you get in a fireplace or a candle. However, I would like to a) be able to change the shape of the flame's footprint (the shape of the burning area), b) not see anything but flame (i.e. not have a wick, a piece of wood, etc. in the way) The ideal scenario would be to have a liquid/gel that I could spread in a particular shape on a piece of glass (lying horizontally) and then ignite the flame when I'm ready to shoot.
Does anyone know what I could use as a fuel that would produce this effect?
Many thanks.