New answers tagged substitution
Off the top of my head I'd say hibiscus flowers could be easier to find and could add something akin to rose hips, which are described as "fragrant and floral, citrusy and sour". Hibiscus certainly could get you in the ballpark, as it has a "tart, cranberry-like flavor". Maybe throw in some flowery hops like East Kent Goldings to make up the "floral" ...
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