“
It’s like a tar pit, but it’s like sugar.”
– Gig, "The Value of Distance"
Jam juice is an alcoholic (?) beverage that was popular on Quire pre-Miracle. It is the centerpiece of a long running gag about how it may or may not have intoxicant properties, may or may not simply bubble out of the ground, and may or may not be called jam juice as opposed to jelly juice.