She wants the perfume they made for her as a young woman made again. The formula survives, but the bottles lost their labels: only the year engraved in the glass is left.
Six unlabelled bottles, each holding two essences: one that leaves at once and one that stays for hours. A freshly dipped strip smells only of the first; a while later, only of the second. No single sniff is enough on its own, and the formula calls for a combination that is in no bottle.
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