
Fresh lime juice and real zest are doing all the heavy lifting here, delivering that bright, citrusy punch without any processed additives or preservatives. For anyone navigating a citric acid sensitivity, the distinction matters — commercially produced citric acid (typically derived from mold fermentation) is a very different animal from the naturally occurring acids found in whole fruit, and this drink leans entirely on the latter. The result is a crisp, effervescent glass that tastes genuinely refreshing rather than artificially tart. Pouring the sparkling water slowly over the lime mixture keeps every sip lively and bubbly, so the texture is just as satisfying as the flavor. A few ice cubes and an optional lime wedge on the rim make it feel like something you'd order at a nice café, not something you mixed together in two minutes. It's the kind of simple recipe that earns a permanent spot in your rotation.
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Juice the limes and finely grate the zest. Stir the lime juice and zest together in a small bowl or pitcher until combined.
Fill two glasses with ice. Divide the lime mixture evenly between the glasses, then pour 1 cup of chilled sparkling water into each, pouring slowly to preserve the carbonation.
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