Question: how to heat up a fully cooked ham in a slow cooker?
Answer: If you have a large enough slow cooker, put the ham in it and add about 1 cup of ginger ale, cola, stock, or water. Heat the ham on low for approximately 8 to 10 hours, or until the temperature reaches 140 F for a 'fully cooked' ham or 145 F for a 'cook before eating' ham.