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Ingredients
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Drink
Method
Drink
Combine spirits and citrus
In a cocktail shaker (or mixing glass) add 2 oz London dry gin, 0.75 oz freshly squeezed lemon juice, 0.75 oz freshly squeezed grapefruit juice, and 0.5 oz simple syrup. Add a handful of ice to the shaker.
Shake
Secure the shaker and shake vigorously for about 8–10 seconds until the exterior is frosty and the ingredients are well chilled and slightly diluted.
Strain into glass
Dump the ice from the chilled highball glass. Fill the glass about three-quarters full with fresh cubed ice (or place one large ice cube). Double-strain the shaken mixture into the glass over the fresh ice to remove any small ice shards and citrus pulp.
Top with soda
Gently pour 4 oz cold soda water down the side of the glass to retain carbonation and create a layered, effervescent finish. Give the drink one gentle stir (1–2 turns) to combine.
Notes
Adjust sweetness by increasing or decreasing simple syrup by 0.25 oz. For a more bitter, aromatic version, swap grapefruit juice for a mix of grapefruit and a dash (0.25 oz) of Aperol or Campari; reduce soda slightly if adding an aperitif.