2011 is nothing, don't worry. there was a post on here a while ago about somebody going through their mum's cupboards and finding a 20 year old tin of malt extract and using it
It will be completely fine, best before dates are just a guideline really.
There are many websites that sell food past its best before dates, here is one for an example www.approvedfood.co.uk
To do this:
1. Brew a 20L batch of bitter.
2. Ferment with a nice flavorful yeast
3. Carbonate and bottle as per usual
4. Ship all 20L to an impartial beer tester. Pm me and I'll send you my address.