Preheat oven to 350F/180C.
Heat the olive oil in a large, oven-proof Dutch oven over medium to high heat.
Add the cinnamon quill to infuse the oil and let it sit for 1-2 minutes, stirring occasionally.
Add the onion, and fry for 3 minutes until it starts to soften.
Add the garlic and ginger and fry off for 1 minute or until fragrant.
Add the lamb, and cook for 3-5 minutes, until the lamb is just starting to brown. If it gets too dry, add a dash of olive oil.
Pour in the red wine to deglaze the pan. Use a wooden spoon and gently scrape the bottom of the pan to release the flavours into the wine.
Add the beef stock, lemon zest, and about half of the green olives.
Place Dutch Oven in the oven and slow cook for 2 - 2 ½ hours until the liquid starts to evaporate leaving a thick sauce. If it is drying up too quickly, add a dash of stock or water. You don't want the stock to fully evaporate so that the lamb burns.
Before serving, stir through the lemon juice and add the remaining green olives.