Add the tequila, passion fruit juice, lime juice and simple syrup to a shaker.
Fill the shaker with ice and shake hard for 10-12 seconds, until well chilled.
Double strain into a chilled champagne glass.
Garnish with a lime wheel.
Use unsweetened passion fruit purée or fresh pulp rather than nectar, then adjust the simple syrup to taste — the sweetness of passion fruit varies wildly between batches.
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