I have a oatmeal stout kit from northernbrewer and wondered what everyone thought about adding black walnuts to it?
From my limited experience with nuts, they tend to get bitter when wet. You probably won't get any nice toasted walnut flavors, but will get bitter/gross flavors.
You'd probably be better off going with something like this:
http://www.savoryspiceshop.com/extracts/extrwal.html
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