Hawaiian Express

1.50 oz PAU Maui vodka
0.50 oz passionfruit liqueur
0.75 oz lemon juice
0.50 oz pineapple syrup
Garnish: lemon slice 

Fill a shaker with ice and add the pineapple syrup, passion fruit liqueur, lemon juice, and PAU Maui Vodka.   Strain into a martini or coupe glass, top with a splash of sparkling wine, and garnish with a lemon slice.