Re-corking

[RyanH]

Ok, so I live alone and typically have at most 2 glasses at any one sitting. I've been going back and finishing off opened bottles even if I'm not really in the mood for that type, or even if it's not particularly well suited to the food I'm eating, because I don't want to waste it. I read elsewhere that you pretty much don't want to wait more than 1 week to finish a bottle after it's been opened, no matter what type it is.

So is this true? Or will they taste well enough if I go 2 or even 3 weeks between opening and finishing?