With the help of a few Skyhold alchemists, Talia had found a way to drastically improve the yield of burning oil— namely, if they blended bone dust with oil, the resulting slime-like mixture reacted to her bonefire affinity just like regular bone did. And the whale-bone cylinder in her hand? It was filled to the brim with that mixture. The alchemists had some terrifyingly flammable oils, and they’d even added some powdered dragonbone to the mix to make it burn hotter.
The creation of this would've been a really fun scene to see.
