Maturing process & temp

[Bartolo]

I brewed an Imperial Stout. Fermented at 67 degrees according to the recipe. Fermentation has completed. Now the recipe instructions call for maturing for 6 months. I have not bottled it yet. It's still in a carboy.
I've had the carboy in my garage since fermentation complete. My garage temp is has been and will remain around 55 degrees. Is that an ok temp for this ale to mature at?
Should I brign it back inside to get it to around 65 degrees, bottle it, and then let it mature?

 

[staffordj]

I like to mature ales at cold temps. For a strong beer like this, it is not mandatory, but it will generally last longer that way.