how can my torch better?

Question

im going to have a battle of the torches whos torch lastes longer no rules
heres my ideas use white birch torch http://www.wwmag.net/barktorc.htm
i made a small one on a stick it lasted 20 minutes so what can i do to make it better like adding stuff to it

p.s. i need a flamable item that burnes long no torch fluid
butan gas i can use

uhh one more thing the cone inside its for leting air circulate but ty alot

Answer 1

use tungsten(it glows at temperatures of abt 1300 degree c ),
or try any of thiz phosphorus , rubidium , potassium, lithium , sodium , calcium , barium, cesium

Answer 2

You can melt wax into the cone of the birch torch, or pour some heated roofing tar (buy it in a can at your local home-improvement hardware store) into the cone of the torch.

Or, just soak some rags in the roofing tar (and/or wax), and wrap it around a stick.

.

Answer 3

typically torches are tar (or some other low grade petrol based gunk) soaked rags rapped around a stick. tar can be difficult to light but once lit will not easly go out (light rain)