Start by peeling the onions and browning them well in a thick-bottomed pot with olive oil, pick them up and set them aside.
Brown the meat over high heat in the excess oil, it can advantageously be done a few times to avoid that too much meat juice is extracted.
When all the meat is browned, it is returned to the pot along with red wine, tomato concentrate, red wine vinegar, brown sugar, cinnamon, allspice, garlic and beef stock.
Now the lid must be put on and the heat must be lowered. The dish should simmer over low heat for approx. 40 min. If it reduces too much in, add more stock or water.
While the dish is simmering, cut a slice in the side of the onions, then they are cooked a little faster. After approx. 40 min., put the onions in the pot, now it all has to simmer for another hour. It is important that the onions are cooked well as they form part of the sauce. Stir in the pot occasionally, adding more liquid if necessary. Season with salt and pepper.
When the onions are cooked well and the meat is tender, the dish is ready to be served.