#6 – Hard Liquor
You should never be afraid of drinking old hard liquor, as its shelf life is indefinite. Drinks such as vodka, rum, whiskey, and similar drinks can never really spoil. Even after they are opened, they will be as good as the day you opened them. The aroma and taste of the drinks fades over time, but it literally takes decades before you can even taste a small difference. Remember to keep bottles in a cool and dark place, and to keep them tightly closed at all times!