I need a physically accurate fire simulation inside an oak whisky barrel. The camera sits at the centre of the cask looking toward the open top, so all flames, smoke, sparks and indirect light must sell the sense of being trapped inside while the interior is charred. Context • The barrel mesh, UVs and textures are already in the scene. • Blender is the required toolset; you are free to use Mantaflow, custom vector fields, force objects or any add-ons you prefer, provided the final file opens cleanly in the current LTS release. • Output is a single video clip under 30 seconds, rendered in Cycles at 24 fps, 1920×1080, with transparency disabled (I need the baked look of the charred staves). Creative notes The flames should be high-detail: believable turbulence, temperature-based colour gradients, glowing embers and soft volumetric smoke. A gentle spiral draw toward the barrel opening has to be visible but never cartoonish. Light flicker on the wood, subtle ash fall and correct exposure shifts are important so the shot feels like practical photography.