Put all items into slow cooker except for cornstarch. Cover and cook on high for 6 hours or low for 8 hours until meat falls apart and shreds easily.
Remove meat, shred or chop into small pieces. Whisk cornstarch and some of liquid from pot in a cup until smooth, pour into pot and whisk into liquid to thicken. Put chicken back in, stir.
Turn pot off and allow to cool. Serve. Can store in refrigerator for up to 3 days or freezer for up to 3 months.
