Posted 25 March 2004 - 07:23 AM
If the bottles are unopened, and the level of the contents are still up to, or in, the neck of the bottle, the spirit or liqueur should be okay. Sometimes even unopened bottles allow spirits to evaporate a little, and oxidization can occur if too much air gets into the bottle, and it's left there for too long.
Once a bottle of spirits is opened, as a general rule you should try to finish it within 6 - 12 months. Again, this depends on how much air is in the bottle. I once had a rare bottle of Irish whiskey, got down to the last 3 or 4 inches, and decided to save it for a special occasion. By the time the occasion arose, the whiskey was completely oxidized & we ended up pouring it down the sink. Be warned!
“The practice is to commence with a brandy or gin ‘cocktail’ before breakfast, by way of an appetizer. Subsequently, a ‘digester’ will be needed. Then, in due course and at certain intervals, a ‘refresher,’ a ‘reposer,’ a ‘settler,’ a ‘cooler,’ an ‘invigorator,’ a ‘sparkler,’ and a ‘rouser,’ pending the final ‘nightcap,’ or midnight dram.” Life and Society in America by Samuel Phillips Day. Published by Newman and Co., 1880.