2 oz Rye Whiskey
1 oz Yes Passion fruit syrup
0.75 oz lime juice
0.75 oz Grapefruit juice
1/4 tsp vanilla extract
1 Egg white (or aquafaba)
Combine all the ingredients in a shaker filled with ice and shake until chilled. Strain into a chilled rocks glass over one large cube of ice.
Garnish with a grapefruit wheel