To make the sausage sauce, first clean and finely chop the onion, the carrot and the celery.
Remove the casing from the sausage and break it up with your hands, then pour the vegetables for the sauté into a saucepan.
Add a drizzle of oil and cook over low heat for about 10 minutes. At this point, add the sausage to the soffritto. Raise the heat and brown for 5 minutes on high heat.
Pour the tomato puree, season with salt and pepper and cover with the lid. Cook over low heat for about 45 minutes, stirring occasionally.
After this time, turn off the heat and flavour with the thyme leaves and give it a stir. Your sausage sauce is ready to use!
