-  2oz Maison No. 9

-  1oz Vodka 

-  0.75oz Lime 

-  0.5oz Simple Syrup

-  3oz Watermelon Juice

-  Tajin (Optional for glass rim)

-  Ice 

Add vodka, lime, simple syrup, and watermelon juice.  Shake with ice.  Rim glass with Tajin.  Pour ingredients into glass.  Add in Maison No. 9.