
Bright, citrusy, and genuinely refreshing, this homemade sparkling water is the kind of drink 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, steeped gently so every sip carries that fragrant, slightly bitter citrus depth. Many store-bought flavored sparkling waters and sodas sneak in synthetic preservatives like BHA and BHT to extend shelf life, but when you make your own at home, you know exactly what's going in the glass. The ingredient list here is beautifully short ā sugar, water, a fresh grapefruit, and plain sparkling water ā so there's nothing hidden and nothing to second-guess. Steeping the zest into the warm syrup is what sets this apart from just squeezing juice into water; it pulls out the aromatic oils and gives the finished drink a complexity that tastes far more elevated than the effort involved. Serve it over ice with a grapefruit wedge on the rim and it looks as good as it tastes ā perfect for a weekend brunch spread or an everyday afternoon pick-me-up.
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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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