
Beet kvass is one of those ancient fermented tonics that feels almost magical — raw beets, salt, a splash of apple cider vinegar, and a little time are all it takes to produce a deeply ruby, tangy drink with serious gut-friendly credentials. Seeds are a surprisingly common hidden ingredient in wellness beverages and bottled tonics, whether from flavoring blends or botanical infusions, so making your own at home is the cleanest way to know exactly what's in your glass. This recipe keeps things beautifully simple: cubed beets, grated fresh ginger, a couple of thyme sprigs, and filtered water do all the heavy lifting over two to three days of quiet countertop fermentation. The result is earthy, pleasantly tart, and a little briny in the best way — nothing like the overly sweet beet juices you find at the store. Serving it chilled in small glasses makes it feel like a proper ritual, and the vivid color alone is enough to stop anyone in their tracks. It's the kind of recipe that rewards patience and rewards you again every time you open the fridge.
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Place the cubed beets into a clean 1-quart wide-mouth glass jar. Add the sea salt, apple cider vinegar, and grated ginger. Tuck in the thyme sprigs, if using.
Pour the filtered water over the beets, leaving at least 1 inch of headspace at the top of the jar. The beets should be fully submerged; press them down gently if any float above the waterline.
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