Meanwhile, prepare the lamb ragout. In a pan, heat a drizzle of oil and fry finely chopped onion, carrots and celery. Add the minced lamb and fry until golden. Pour in the red wine and let the alcohol evaporate.
Add the peeled tomatoes and mash them with a wooden spoon. Add the garlic, salt and pepper to taste. Leave to simmer for at least 1 hourturning occasionally.