Blue jelly

 is a mob drop, obtained by killing blue slimes, found only within the dungeon. It's primary use is to serve as an alchemical material, able to be broken down into reagents once studied, alongside honey and hemp.

Alchemy
can be decomposed into solution and extract with the hand mixer and any of the distillation cubes, respectively. Having unlocked Master of Alchemy produces one additional reagent at any workstation.