In an empty cocktail shaker, combine tequila, passion fruit nectar, Triple Sec, lime juice and syrup. Fill with ice; cover and shake until frost forms on the outside of the shaker, 15-20 seconds ...
In a cocktail shaker, combine a large handful of ice, mezcal, passion fruit purée, Cointreau, lime juice and agave. Shake until icy. Pour, with the ice, into the prepared glass.