330-500ml cola (full sugar, not diet - though more may be needed depending on size of the joint)
Whole black peppercorns, to taste
(Small splash of cider or malt vinegar, about 1 tbsp, optional)
(1 tsp mustard, optional)
Garnish
Mashed potatoes
Method
In a large bowl, add the short ribs and all vegetables and herbs for the marinade. Add the wine to cover. Marinate at least 6 hours in the fridge.
Preheat the oven to 180°C.
Pat the meat dry with a towel or paper towel and season the meat with a generous amount of salt and pepper.
In a large ovenproof pot, heat the olive oil over medium-high heat on the stovetop. When the oil begins smoking, sear the meat until well-browned and transfer to a plate.
Add the onions and garlic to a slow cooker and place the meat on top. Season and poor over the cola, enough to come up halfway. Add the optional ingredients.
Cover and cook on low for 8-10 house or on high for 4-6 hours.
Rest for 10–15 mins before cutting. Slice against the grain.
Serve with mashed potatoes, or another side of your choice.