Toast the pine nuts. Heat a non-stick frying pan over high heat. Add the pine nuts and cook for about a minute shaking and tossing every few seconds so they won't burn. Remove from the pan and set aside.
Brown the meat. In the same frying pan, heat the olive oil over high heat. Add the ground meat and cook until browned all over breaking the meat as you go with a wooden spoon.
Season with spices (fennel, cinnamon, allspice, ground pepper), salt, and herbs (thyme and sage).
Optional: If using the poultry innards add them now.
Drop the heat to medium.
Add the leeks and onion and saute until softened stirring often.
Add the rice and cook for a minute. Add the bay leaf.
Pour in the wine and wait until it evaporates completely.
Drop the heat to low and pour in 200 ml of hot water.
Add the chestnuts, pine nuts, dried prunes, and raisins.
Cook until it absorbs all the water.
To use as stuffing inside poultry: At this point remove from the heat and allow to cool completely. Then use it to stuff a turkey, chicken, or goose (See Notes below).
To finish off the stuffing on the stovetop: Add ¾ cup hot water and cook covered until the rice is cooked through.
To finish off the stuffing in the oven: Add the stuffing to a baking dish along with ¾ cup hot water, cover, and bake at 375°F /190°C until the rice absorbs all the water.
Store leftover stuffing for up to 3 days in the fridge.