A hot, bright, near-unquenchable flammable gel Carl crafts from moonshine and Mordecai's paste — perfect for burning an ooze.
Burn Gel is a flammable gel Carl developed with Mordecai, having steered the mentor into 'inventing' it by mentioning how he used to set hand sanitizer alight. Made from moonshine plus a paste Mordecai concocts, it burns hot, bright, long, and with little smoke, but has a toothpaste-like consistency that makes it slow to apply — impractical in fast combat, but ideal for a deliberate burn. Carl carries a plastic bagful loaded into a funnel like a cake-decorating syringe, and uses it to douse the recliner over the Sand Ooze's core; torched, it burns white-hot and cannot be smothered even as the ooze buries it, killing the boss (and burning hot enough to help collapse the castle).
A thick, cloudy, toothpaste-consistency gel, dispensed from a funnel/syringe; burns white-hot and bright with little smoke.
Carl's slow-applying but intensely hot incendiary, decisive against the fire-resistant ooze.