This is one of the best party tricks I've ever seen. There's nothing like a good magic show and Rainbow Shots definitely deliver - when you pour seven different colored shots out of the same shaker right in front of your guests eyes?!! A perfect presto.
How it works: The different densities of the four liquids used to make these, allow the separate liquids (i.e.: colors) to stack up in the shaker. As the shots are poured out, slight blending occurs between the layers creating the transitional colors like orange and green.
Note: All the shots will not have equal amounts of alcohol, nor will they all taste equally awesome. (ex: the red will be mostly grenadine. Ew.) This is more meant to be an "oohh, aaaahhh" party moment that comes before the really tasty, if less magical, drinks are served...
And the best thing? With just a little practice they're surprisingly easy to make. So let's go chase that rainbow!
*I used a glass one to make this Instructable more clear, but to maintain the mystery when doing this in front of others, a non-transparent/steel one is best.