Masterstock: Place ginger, garlic, cinnamon, star anise, sushi vinegar, hoisin sauce, half the brown sugar, half the soy sauce, dashi stock and water a large stockpot and bring to the boil, stirring to dissolve sugar.Reduce heat to a gently simmer and cook for 20 minutes to allow the flavours to infuse.
Pre-heat oven to 160◦C, 40% steam, 60% dry heat.
Heat a frying pan over medium-high heat.Season short ribs on all sides with salt and pepper.Working in batches, sear short ribs on all sides until deeply and evenly browned (approximately 6-8 minutes). Set aside.Add mirepoix to frying pan and cook for 5 minutes or until softened and lightly coloured.Place mirepoix in a shallow 65ml full gastronome pan.Place beef ribs bone side up on mirepoix.Add master stock, 2/3 full. Cover with baking paper and foil and roast for 3 hours.
Masterstock: Place ginger, garlic, cinnamon, star anise, sushi vinegar, hoisin sauce, half the brown sugar, half the soy sauce, dashi stock and water a large stockpot and bring to the boil, stirring to dissolve sugar.
Reduce heat to a gently simmer and cook for 20 minutes to allow the flavours to infuse.
Place reserved stock in a saucepan over high heat.Add remaining brown sugar and soy sauce, bring to a rapid boil.Boil until liquid coats the back of a spoon.
To serve: Portion cut beef ribs, brush with reduced masterstock.Serve with pickled vegetables, miso mayonnaise and steamed rice if desired.