I'm new to homebrewing, and still a little gun-shy on trying "out of the box" ideas before i really know what I'm doing. Right now I have some stout fermenting, and I've been reading about hazelnut flavored stouts, and I'm wondering if it's too late to convert this stout into a hazelnut stout? Would I just add some hazelnut extract right before bottling? Is this a bad idea, something I should wait on until I plan it from the start? It's just a basic stout recipe I bought from morebeer.com. Also, if adding the hazelnut at bottling is a good idea, where would I find the hazelnut extract? Thanks for any help!