FG and AlphaAce, in BSG a mushie is clearly some kind of candy-like treat. In The Lost Warrior, they show it when Athena is dining with Starbuck. It appears as a small pastel-blue square, eaten as an after dinner treat.
Before seeing this scene, I had only heard of a mushie being used to lure Muffit somewhere (like Fire in Space), and it was never shown. When shown on TV the Athena scene was always cut for commercials in reruns so this is the first time I got a chance to actually see one. (Before this I thought it was only a daggit treat).
It's just another wonderful BSG icon, like their jargon. Hope this helps.
P.S. Thanks Tom for the info! That's probably what it's based on.
