This ingenious tool instantly reveals the aging potential of any bottle of wine. To use, pour a glass of wine, taste and evaluate. The key accelerates the natural oxidation and aging process of wine through simple contact with its patented metal alloy disk. Dip the disk end of the tool into the wine for one second—every second of contact corresponds to one year of aging—and taste again. If the wine remains consistent or improves, the wine is worth aging. Continue testing and tasting second after second to determine the ideal number of years to age your bottles. And if the taste deteriorates after contact with the tool, you'll know that the wine should be enjoyed now rather than stored.

Peugeot has been crafting fine housewares for nearly 200 years.