01 - 
                Put chunks of lamb shoulder in a roasting pan with the potato quarters, garlic cloves, and onion chunks.
              
              
              
                02 - 
                Drizzle olive oil on everything and toss salt, pepper, cinnamon, and cumin over the top. Stir around so all the pieces catch the seasoning evenly.
              
              
              
                03 - 
                Pour the pureed tomatoes over the vegetables and lamb. Give it another quick mix, making sure the tomato spreads evenly.
              
              
              
                04 - 
                Soak some parchment paper in water, squeeze it, and place it over the dish. Cover it snugly with foil, making sure to trap steam inside.
              
              
              
                05 - 
                Bake for 4 hours at 180°C in a fan oven. The lamb should be super soft and fall apart easily when it's done.
              
              
              
                06 - 
                Take the dish out of the oven and let it sit for 10 minutes. Serve warm with bread on the side.