A bottle of an opened white wine is OK for about a week. A bottle of an opened red wine can last about a month. How do you put a spoon in a wine bottle?
Vermouth is a wine. Once it is opened it can last for months, but no longer than that. Then the flavour tends to deteriorate, though you can still use it for cooking. The flavour is always best when martini is freshly opened.
About a week.
indefinite
It last for a longer duration, if the cap of the bottle is closed properly.
40 shots
3 or 2 days
talking to some people, it seems to last around 3 years
It should last for about 6-8 months once opened.
Depending on whether you want to know about a tawny Port or a ruby Port, it can last anywhere from a week to a month after opening. Ports are made in two main styles: wood-aged or bottle-aged. Wood aged Ports are drinkable once they hit the store and last for about a month once opened. Bottle-aged Ports have a longer aging time before they are marketable and once they are opened only last about a week. Ruby Port is both bottle-aged and wood-aged and tawny Port is wood-aged only so a ruby Port would last only a week once opened and a tawny Port would last about a month.
I'm assuming you mean an opened bottle of Mezcal con Gusano, since tequilas never have worms in them. They will be good for about five years, provided they are kept cool and out of the sun.
If it's unopened, kept cool, and out of the sun, almost forever. If it's opened, you still got at least five years.