1. Combine all the ingredients in the crock pot, cover and cook for 8 hours at low temperature, or until the meat is tender.
2. Remove the roast from the crock pot and strain the remaining liquid in a pan to make gravy.
3. Bring to a boil and thicken the gravy with corn starch.
Useful Info: Crock pot is commonly used to describe any slow cooker, but in fact it is the trademark of the developer of the modern slow cooker - Rival industries.
One of the advantages of the slow cooker is that slow cooking tenderizes cheaper and tougher cuts of meat.
During cooking the lid should not be removed for any reason.
Due to the low cooking temperature, any heat loss will result in significantly longer cooking time.