
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 until they release their juice, then finished with apple cider vinegar and a pinch of kosher salt — that's the whole ingredient list, which is exactly the point. Store-bought sodas and flavored drinks are notorious for sneaking in synthetic preservatives like BHA and BHT, so making your own concentrate from scratch puts you completely in control of what goes into your glass. The process is low-effort and deeply satisfying: a gentle simmer, a long rest in the fridge, and a quick strain, and you've got a vibrant syrup that keeps for up to four weeks. The balance of tropical sweetness and mellow vinegar funk is surprisingly addictive — it's the kind of thing you'll want to keep stocked at all times. Just splash a couple tablespoons into sparkling water over ice and you have a refreshing, preservative-free drink that feels a little fancy without any fuss.
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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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