Ingredients: 2 cups of orange juice, 1 and a half cups of sugar, 1 tablespoon of lemon juice, 1 piece of cinnamon.
Method: Heat the orange juice, cinnamon and sugar together on the stove. Discard the cinnamon when it thickens. Close the oven with lemon juice. Take a bowl of water and pour thick orange juice on top of the glass jar. Wait until it cools down. Close the lid of the jar when it cools down.