1/2 oz of creme de cacao (or chocolate liqueur)
1/2 oz of Creme de menthe (or Mint liqueur)
I've seen this shot done in two ways. \r
Pour both ingredients into a shaker, shake with ice, and pour into shot glasses.\r
Pour half a measure of Creme de Cacao into a shot glass, layering the Creme de Menthe on top. \r
It does not have to be exact, try it a couple times, and find the measures that suit your taste buds!