Heat the pan with 2 tbs olive oil, add the onions and allow them to soften. Add the rest of the ingredients including the pork you browned but do not pour in the lemon just yet.
Bring them to a boil and then simmer for about 90min or until the sauce reduces and the meat is tender. Stir occasionally with a wooden spoon.
Once the meat is ready, pour in the lemon juice, season with salt and pepper to your liking and stir it all well. If you have time let the food rest covered and off the heat to allow all the flavours to combine. Enjoy warm with a fresh salad, yoghurt and definitely bread to dip into that sauce.