Bug Milk is a key ingredient in gaining access to the Nightosphere. It was seen in the episode "It Came from the Nightosphere," when Finn tried to reunite Marceline with her father. it is unknown if Bug Milk is actually a drink.
Appearance
The Bug Milk container appears to have two symbols on it: A ladybug near the top on the side, and what looks like a stool to be sat on while milking the bug. This may give a hint that a certain kind of bug is milked to get bug milk.
Trivia
- It is likely that Bug Milk is a reference to the 1988 comedy horror film Beetlejuice.