(covers information from several alternate timelines)
Chakotay obtained several bottles of the cider in 2377, and kept them hidden aboard USS Voyager in Cargo Bay 2. When he was discovered hiding the last couple bottles by Icheb, Chakotay asked him to keep it a secret from Neelix. Icheb advised him to keep the rest in the Borg parts container, as Neelix found it to be "too creepy" to inventory.
In an alternate timeline in which Voyager was shattered into 37 different timeframes, an Icheb of 17 years into the future told Chakotay he had never told Neelix where he had hidden the cider. (VOY: "Shattered")