The grapefruit whisky sour is a popular choice on modern cocktail menus because it amplifies a standard sour recipe through the use of seasonal contrast. This version of the whisky sour captures the same texture as lighter cocktails but its structure is unique. The concoction features vibrant profiles without excessive sweetness due to the acidity of grapefruit, and pairs well with brunch or pre-dinner preparations, offering a clear, zesty finish that complements appetisers or light-grilled dishes. Bartenders frequently modify the structure with regional bitters or alternate garnishes, giving the drink a flexible edge in ever-changing menus.
Fill a cocktail glass with ice water to chill and set it aside.
Add whisky, grapefruit juice, lemon juice and sugar syrup to a shaker filled with ice.
Shake again until well chilled.
Empty the glass, strain the drink into it and garnish with a grapefruit slice.
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