Add all ingredients to a shaker and shake with ice until cold
Double strain into a nick & nora glass and serve
notes
Apparently this cocktail was invented at the Anvil bar in Houston, TX. I was recently in Houston for a wedding, and went to Anvil. Victor, our bartender, made me a variant with Sotol instead of Batavia Arrack (working name "Elogio") that was very good.
It seems like this template would work well with funky rums in general.