Preheat your oven to 160°.
Firstly, season your Irish beef ribs with salt and pepper before coating in the plain flour.
In a heavy based oven proof casserole dish or pot, heat the olive oil and brown your Irish beef ribs, before adding the vegetables and mustards.
Add the stock to the casserole dish, pop a lid on and place in a preheated oven for 3 hours until the beef is just about to fall from the bone.
To serve, mix in the fresh parsley.