Thanks for posting.
Not that I have experience inthis, but if I did this is what I'd suggest as for Jeager Bombs.
They are called Jeager Bombs for a reason, Jeagermeister bottles work the very best.
You take the bottle and get rid of any plastic restictor plates or any type of pour restrictor in the neck, and you have to take the plastic/cardboard seal out of the lid. Poke the smallest of holes in the lid and fill the bottle all the way full of gas. Put the lid on all the way tight then backit off an 1/8 turn (like a wheel bearing). Clear out a nice flat spot in the fire center, so its sitting on coals and surrounded by logs that are as tall as the bottle.
Set her in there and stand back.
It will start to boil the gas and then it will start spewing a plume of gas and gas vapors which will ignite and look like a blow torch coming out of the top of the bottle.
Once it does this for a minuite or two (you will hear it change tones) the top will get so hot it will expand and blow off. The gas will geyser straight up and ignite to a huge mushroom cloud of fire.
Sobe bottles break a lot, so do most others, Jeager bottles dont.
Wind is bad news, if there is much wind dont do it.
Smirnoff 1/2 gallons work pretty good too.