|1 3⁄4||oz||Mezcal (Blanco)|
|3⁄4||oz||Grapefruit juice (white)|
|3⁄4||oz||Crème de Banane, Giffard|
Shake everything, fine strain into a coupe.
The grapefruit + banana interplay comes from the cited link. It really needs white grapefruit - even Oro Blancos need a touch of citric acid per ounce. There are so few bright cocktail acids... why did people have to go screwing with grapefruit?