Could be. Consider pre-cooking meat to some extent to remove as much oil as possible beforehand. That's a downside of using raw meat in these, the oil has nowhere to go.
Could be.  Consider pre-cooking meat to some extent to remove as much oil as possible beforehand.  That's a downside of using raw meat in these, the oil has nowhere to go.
            
          
Might be good with something gamier like venison?