A tropical twist on the classic mule cocktail with pineapple vodka and fresh passionfruit. Makes 2 cocktails.
If you can't find fresh passionfruit you can always add in passionfruit puree, or passion fruit juice. Try to find 100% passionfruit juice or nectar, some blends have other juices and it won't taste the same.
If you go with the fresh lime juice route but still want the drink a little sweet go with a teaspoon or so of lime juice and some simple syrup to taste.
Simple syrup is a 1:1 water to sugar ratio. Boil in a pan until sugar is dissolved, cool and store in a container in refrigerator. Simple syrup lasts a few weeks kept well chilled.
I like using a flavored vodka to up the tropical-ness. You can always used a non-flavored if you like.