Heat the oil in a medium-sized saucepan. Peel and finely chop the onion, peel the garlic and crush with a little salt. Add the onion to the hot oil, cover and cook gently for about 5 minutes until the onion is soft but not brown. Stir in the minced beef and the crushed garlic. Continue to fry gently for a moment to seal the meat.
Stir the flour, salt, pepper, tomatoes and juice from the