
Bright, citrusy, and endlessly refreshing, this homemade sparkling drink is the kind of thing that makes you wonder why you ever reached for a can. The secret is a quick grapefruit syrup made from real zest and freshly squeezed juice, simmered just long enough to dissolve the sugar and pull out every bit of that fragrant, slightly bitter citrus flavor. Letting the zest steep after the heat is turned off deepens the taste without any artificial shortcuts. Straining it clean and folding it gently into chilled sparkling water keeps the bubbles lively and the flavor pure. Store-bought flavored waters and sodas often sneak in preservatives and additives you'd rather avoid, but every single ingredient here is exactly what it says it is ā sugar, water, and a fresh grapefruit. Serve it over ice with a wedge on the rim and it looks as good as it tastes, whether you're pouring it for guests or just treating yourself on a warm afternoon.
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Combine the sugar, water, grapefruit zest, and grapefruit juice in a small saucepan over medium heat, stirring until the sugar is fully dissolved, about 3ā4 minutes. Do not boil.
Remove from heat and let the syrup steep for 15ā20 minutes, until cooled to room temperature and the zest flavor has infused.
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