
Bright, tangy, and just sweet enough, this pineapple shrub is a drinking vinegar concentrate that transforms a glass of sparkling water into something genuinely special. Fresh pineapple chunks are coaxed with sugar over gentle heat until the fruit releases its juice, then apple cider vinegar and a pinch of kosher salt are stirred in to create that signature sweet-tart depth. The hardest part is waiting the 24 hours for the flavors to fully meld in the fridge — but that patience pays off in a concentrate that stays fresh for up to four weeks. Every single ingredient here is straightforward and plant-based, so there's zero guesswork about hidden seafood derivatives or cross-contact risks that can sneak into store-bought mixers and sodas. Just two tablespoons stirred into sparkling water over ice gives you a refreshing, complex drink that feels far more sophisticated than the effort involved. It's equally at home as a mocktail base, a cocktail mixer, or a midday pick-me-up when you want something more interesting than plain water.
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Combine the pineapple chunks and sugar in a medium saucepan. Stir to coat the fruit, then let the mixture sit at room temperature for 10 minutes until the sugar begins to dissolve and the pineapple releases some juice.
Place the saucepan over medium heat and cook, stirring occasionally, until the sugar is fully dissolved and the mixture just comes to a gentle simmer, about 3–5 minutes. Remove from heat immediately — do not boil vigorously.
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