This recipe has been passed around between me and my friends for a long time. I don't know who originally came up with it but it is simple to cook and worth the wait. The only problem you may encounter is regulating the temperature on your pit.
Optimum cooking temperature will be between 200 to 250 degrees.
Trim excess fat from brisket and place in smoker.
Let it slow smoke for 2 hours or until you have a good smoke ring around it.
Remove from smoker and rub it down with a stick of butter and then rub in the brown sugar.
Wrap in tin foil and place back in the smoker cooking at 1 hour per pound while maintaining slow smoked temperature.
If the temperature is too hard to control then you can cook as above for the first two hours or until you get a good smoke ring, add butter and brown suger, wrap in tin foil and cook in oven at 225 degrees for the remaining cooking time.