For best flavor, allow the shrub to chill for at least 24 hours before serving. It can be stored in an airtight container in the refrigerator for up to 2-3 weeks. Serve 1 part shrub with 3-4 parts sparkling water, or use as a mixer for gin, vodka, or rum. A cinnamon stick or a few cloves can be added during simmering for extra warmth.
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