The first layer
In a tall pilsner glass, add 3/4 ounce jalapeno-infused blanco tequila, 1/2 ounce fresh lime juice, and 1/2 ounce Velvet Falernum. Add crushed ice and stir.
Add more ice
Fill the glass with additional crushed ice. The second layer will float on top of the first.
For the second layer
Pour 1 ounce white rum, 1/2 ounce lime, 1/4 ounce blue Curaçao, and 1/4 ounce simple syrup into a cocktail shaker.
As if by magic
Carefully strain the blue mixture over the crushed ice.
A few embellishments
Squeeze an orange twist over the top of the drink to express oils. Garnish with the twist and a healthy mint sprig.
Straws make it possible to sip from the two different layers—it's two separate drinks in one!