This wine was fermented from an icy mushroom. Unfortunately, it's frozen solid, but you could probably smash the bottle and have a wine popsicle. Popsicle of wine -- you've always wanted someone to give you, give you, give you one of those. They're especially nice in summertime, boy.
"Popsicle of Wine" is a reference to the Talking Heads song "Popsicle", whose chorus goes: "Popsicle of love / Gimme gimme gimme one of those / (It's summertime, boy!)"
The "smash the bottle and have a wine popsicle" line is a reference to a Black Books episode where Bernard Black puts a bottle of wine into his freezer, takes it out when it's frozen, smashes the glass off it and starts to lick the winesicle, much to the amazement of the customers.