Roll ox cheeks in salt and flour tapping off any excess
Heat pan with veg oil and sear cheeks then set aside
Chop carrot, celery and onion
Soften vege until onions are translucent
Add red wine, stock, mustard and cheeks then cover with tin foil braise at 160c for 3 hours
Peel and dice celeriac
Heat butter and oil until foaming then add the celeriac and garlic until browning
Add milk and cream simmer for 30 mins or until tender on medium heat then blend smooth
Peel and wash potato then finely grate, wash and dry the potato
Heat beef fat to 160c and fry potato until crisp and set aside
Strain the braised liquid then add red wine, parsley and chives
Baste the ox cheeks well then serve with puree and potato