1 part EFFEN Yuzu Citrus Vodka
2 parts grapefruit flavored club soda
Grapefruit slice
1.5 oz EFFEN Yuzu Citrus Vodka
3 oz grapefruit flavored club soda
Grapefruit slice
45 ml EFFEN Yuzu Citrus Vodka
90 ml grapefruit flavored club soda
Grapefruit slice
Chill a highball glass in the refrigerator
Mix both liquid ingredients over ice in the highball glass
Garnish with a grapefruit slice