Put all the listed ingredients, except cornflour, into the slow cooker and stir well.
Slow cook on low for at least 8 hours, the idea is to not require teeth.
Once meat is 'fall apart soft', place some excess liquid into a bowl. Mix in corn flour and create a lump free paste before transferring back into the slow cooker. Stir in and allow to thicken. Repeat until it's gravy consistency.
Notes
Serve with mash and veg.
This meal freezes really well and very handy for meal prepping.