From publisher blurb:
Necromancers can bring just about anything back from the dead, often with terrifying results. Blood is no different. When the dark magics are applied to vital fluids without a host, it’s possible to create a Blood Pudding.
A semi-sentient ooze of coagulated crimson, the Blood Pudding exists to do one thing and one thing alone: Feed. Whether patrolling the depths of a wizard’s dungeon or roaming free across the countryside, its only goal and drive is to find the living and relieve them of blood.