title_body: How to recover a carboy of cider?
upvoted_answer: First, I would check to see if it's still drinkable. You might have a carboy of apple cider vinegar if you haven't put any sulfites into it or somehow prevented from oxidation. The way to test it is to get a siphon (that you have sanitized) and suck out a little to taste. If it tastes ok, then you need to prepare for bottling. 
  
  I would follow these directions except when it says to prime with 1/2 cup of corn sugar, I would put in a little yeast (maybe a tablespoon?) and mix with some water before you bottle. Make sure the yeast has dissolved. I'm sure the yeast in your carboy is dead at this point.