After 3 weeks in primary, I racked my oatmeal stout to secondary. I racked 2 gallons to a separate container for my bourbon char beer. I put 3/4 oz. of bourbon barrel char in a spice bag and covered it with 1/4 cup of Buffalo Trace bourbon for sanitation. After soaking for an hour, I added the spice bag to my stout. I only added a little bit of the whiskey. The char has been in the stout for 2 weeks. Today I did a side by side taste test. The char stout has a very subtle bourbon flavor, but it is very subtle. I think I might remove the char from the spice bag and let it sit for another week.
No burnt flavor by the way.