Can you still consume old liquor?

Answer 1

Sorry, based on personal experience, you'll get sick off of it...like vomiting sick,

Answer:

Old is not an exact term. Some spirits such as Scotch and Cognac are aged for years or decades before consumption, some liquors ar over a hundred years old before consumption. Unopened bottles of spirits in your grandpa's closet should be all right (Clos de Griffier Champagne Cognac 1738 is the oldest known) alcohol in glass doesn't age very much at all. If on the other hand, you mean finding a half consumed bottle of cheap booze that the party in the park left behind, it may be as much urine and street drugs as anything ans should be avoided.