Stir grapefruit juice, vanilla extract, lime juice, sugar and tequila in an old-fashioned glass. Top with ice and club soda.
Omit tequila for non-alcoholic cocktail.
Stir grapefruit juice, vanilla extract, lime juice, sugar and tequila in an old-fashioned glass. Top with ice and club soda.
Omit tequila for non-alcoholic cocktail.