First trim the meat, then cut into 2.5-4cm cubes.
Heat the oil in a flameproof casserole and fry the meat over a fairly high heat until the cubes are nicely browned.
Now add the chopped onions and garlic to the pan, turn the heat down a bit and continue to cook for a further 10 minutes, or until the onions are softened.
Next add the tomatoes to the casserole with the Herbes de Provence and some seasoning.
Stir well, cover the casserole and transfer to the oven to cook slowly for about 2-2½ hours, or until the meat is tender.
Then taste and sprinkle in the sugar, and additional seasoning if necessary.
This is delicious served with buttered noodles.