I brewed an imperial stout with OG of 1.109. I thought I got stuck around 1.045ish but it turned out I just didn't know how to use my brand new refractometer. So I added some high gravity yeast in an effort to get it to 1.035ish but....well the second yeast addition worked too well and got me down to 1.009. I know it tastes alcoholy because there is a lot of alcohol in there but it's there anything I can do to mute the after taste? Was thinking oak chips and a couple months of aging, any other suggestions?