1 1/2 oz Bols Genever
3/4 oz lemon juice
1/2 oz simple syrup (1:1 sugar and water)
Shake the genever, lemon juice, and simple syrup with ice and strain into an ice-filled rocks glass. Insert straw and float approximately half an ounce of red wine on top. Using crushed ice to fill the glass is a nice touch but not strictly necessary.
This is a variation on the New York Sour, with genever offering some nice botanicals and a more striking visual contrast than rye does. It was created for a party at Metrovino attended by Washington wine makers.