A zesty and vibrant cocktail, that tastes as delicious as it looks.
Place grapefruit juice, sugar, lime juice and soda water in a large pitcher. Stir gently to combine ingredients.
Add [yellow tail] Sauvignon Blanc slowly and stir to combine.
Using a fine mesh strainer, pour juice mixture into your serving glasses (unless you love the pulp!)
Garnish with rosemary and add ice cubes to taste.