This article will not only answer how long it takes to smoke a 15-pound brisket but it will also take you through the entire process of smoking your brisket to make the best beef brisket ever.
You should use a dry rub on your brisket to help season and enhance the taste of the meat. There are plenty of store-bought options on the market, or homemade recipes for brisket rub.
Smoking your brisket at around 225 degrees is the best cooking temperature because you want the smoker temperature to be low for breaking down connective tissue.
Make sure you use a meat thermometer to monitor the internal temperature of the brisket so that you can wrap and pull the brisket from the heat at the right time for each step in the process.