Cooking with white wine

[HerBee]

So I have another cooking question. I want to make a light white wine sauce for mussels. So since the recipe obviously requires white wine (duh! dunno why I need to type that, but anyhoo), I did some research on the net and a lot of them do say never to use a wine that you wouldn't drink. "They" say to stay away from the supermarket white cooking wines and to use a good white wine that you'd drink, like a sauvignon blanc. Ok, that's all good advice and makes sense. Now my question is how do I store the leftover wine and how long can I store it for? I'm not a wine drinker so I know I would have leftovers, otherwise I'd just pour a glass for dinner.

[Lmhansen]

Seems like good advice:
http://www.lisashea.com/lisabase/coc.../winelast.html

Buy small bottles

[HerBee]

Thank you.