Gorg butter is made from the greaseberry plant. Just right for Gorgs, but Boober considered it to be too salty, while Doc thought it would need a bit of salt.
Gorg butter was used by Ma Gorg to get Junior's finger out of the spout of her teapot, and it was again used to help Sprocket out of the Fraggle hole, and a third time to help get the ring off Doc's finger.
Gorg butter is also used to grease beanbarrows for use during the All-Day, Cross-Cave Beanbarrow Race Finals.