I posted a separate thread on this, but since it's related to the Mr. Beer I thought I'd ask here too.
I currently have a 5 gallon batch of stout in my primary fermenter bucket and I picked up a few Mr. Beer's on clearance and was thinking of splitting that batch and using the Mr. Beer barrel as a secondary to try different flavors, but as I just read above I'm concerned that it might expose the beer to too much air. I was only planning on letting them sit another week after transferring.
Does anyone have any advice? The flavors I'm planning on trying are a cacao tincture, a vanilla and cacao tincture, and maybe one with raspberry puree.