Start with getting your jager, 151 rum, peppermint schnapps, shot glass, strainer, shaker and jigger all together.
Fill up your shaker with ice. It should be mostly full.
Use your jigger and measure .75 oz of Jager. Then, put the Jager into your shaker
Use your jigger and measure .75 oz of Peppermint Schnapps. Then, put the Peppermint Schnapps into your shaker
Use your jigger and measure .75 oz of 151 Rum. Then, put the 151 Rum into your shaker
Place the top onto your shaker and shake it all up. This should take around 20 seconds or until the outside of the shaker is cold/icy to the touch.
Pop off the shaker top.
Place the strainer onto your shaker and pour the drink into your shot glass.