1. The evening before cooking, trim excess fat and any glands off the pork shoulder. Leave ¼ of the fat cap on the top of the shoulder. Liberally season with the salt.
2. Lay out the banana leaves in a cross pattern and place the pork shoulder in the center. Then carefully wrap the shoulder so the entire shoulder is not exposed.
Place the wrapped pork shoulder on the smoker and insert a good digital thermometer to monitor the cooking temperature, like the Thermoworks Smoke or Smoke X unit.
Continue smoking until the internal temperature of the pork reaches 190 degrees Fahrenheit. Test the temperature in a few places. That is when the shoulder is done.