Heat oil in a frying pan and roast pork loin in it, then set aside. Add the same oil to a saucepan and sauté parsley, garden onions, garlic, spinach, chard, pre-sauteed tomatoes, raisins and pine nuts. Add meat stock and season with salt and pepper. Put some vegetables on the bottom of a pot form and pork loin, as well as over remaining vegetables on top. Cook in the oven for 15 minutes.
Tip: Did you know that one bowl of spinach covers almost all the need for manganese and fiber?