I'm not sure about question 1, but I have cooked a clod I picked up at restaurant depot. It was big around 18lbs I think so I cut it in half and smoked it like a butt for pulled beef. Was pretty darn good. I took it to about 195ish and was able to pull it apart easy so I'm not sure if you would get slices out of it at that temp. Others may have though.
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