1 C. Rosé
1 1/2 C. Dry vermouth
3/4 C. Pink grapefruit juice
1-2 oz. Club soda
Combine rosé, vermouth, and pink grapefruit juice in a large pitcher and let chill.
When ready to serve pour pitcher contents into a cocktail glass with ice and top with chilled club soda.
Garnish with thin slices of pink grapefruit, and enjoy.