Originally Posted by m1k3
After 3 months I don't think the yeast will get going enough to clean up the acetaldehyde. Might just wind up with a sweet apple beer.
Pitching an actively fermenting starter may not even be enough.
I had a green apple beer never got better. But I had one friend who was happy to take it off my hands.
Haha, there you go, find a friend that likes it! If the levels are high enough though that the OP finds it off-putting, it's worth trying to fix, or at least to bring the levels down. It can be like drinking apple pucker at higher levels, and no one enjoys that. (I'm kidding, someone probably does.)