Gamma Squad has posted video from a Chicago-based group of Ghostbusters fans who have uncovered a secret recipe for Ecto Cooler, the Hi-C juice box flavor that was wildly popular for the entirety of the 1990s (according to Gamma Squad, it "first hit shelves in 1987 as a tie-in to the Ghostbusters animated spin-off The Real Ghostbusters. But while the animated series only lasted six seasons...Hi-C kept it on shelves until 2001.") I like to think the discovery of this recipe involved a National Treasure-like chase sequence. Here's the recipe:

1 Packet Flavor Aid Orange
1 Packet Flavor Aid Tangerine
3/4 Cup Orange Juice (No Pulp)
3/4 Cup Tangerine Juice
1/3 scoop Countrytime Lemonade
1 3/4 Cups Sugar
Green and blue food coloring

The (overlong) video about how to make Ecto Cooler is over here.