Add all of the liquid ingredients into a cocktail shaker, as well as the flesh of half a passion fruit. Save the rest for your garnish.
Fill the shaker with as much cubed ice as you can, then shake it really hard – the pineapple juice should give a nice foam when shaken hard enough.
Strain into a very tall glass full of cubed ice, then garnish with the pineapple leaves, berries & passion fruit half.