Ask your butcher to leave the shank end of the lamb intact — ie not cut. Some butchers prepare carvery lamb legs that are easy to carve. Excellent served with a pinot noir.
Place the roast fat-side up in a heavy roasting pan. Combine the rosemary, the salt, pepper and oil. Rub the mixture all over the roast. This can be done 1 day ahead. Cover and chill.
To make the sauce, pour the boiling water over the dried mushrooms in a bowl. Soak for 20 minutes. Strain, reserving the water. Squeeze the mushrooms dry and coarsely chop.
Heat 2 tablespoons of the rice bran oil in a large saucepan. Add the fresh mushrooms and sauté, until browned. Add the shiitake mushrooms and garlic. Stir for 1 minute. Remove from the heat. Combine the flour with the rosemary in a small bowl. (The sauce can be prepared to this stage 1 day ahead.)
Preheat the oven to 180°C. Roast the lamb for 30 minutes then reduce the heat to 160°C. Roast for a further 1 – 1 1/4 hours, until cooked to your preference.
Place on a platter and tent with foil. Drain any fat from the roasting pan.
Add the shiitake water, stock and wine to the pan, stirring well. Boil for 2 minutes. Add the mushroom mixture then whisk in the flour and oil combo. Simmer, until thickened. Serve with the sliced lamb. Serves 8. |