Softy Cheese is an item that first appeared in the episode "Ghost Princess." It is sold at the Squeez-E-Mart and Clarence dies from eating too much of it. Throughout the episode "Ghost Princess," Jake had a fear of Softy Cheese, but at the end of the episode, Finn helped Jake conquer his fear, but getting him to eat some more Softy Cheese.
Softy Cheese is bright yellow gold-like color. It's very sticky and messy. It is, as the name inplies, "softy."