Not commonly in my (Tuscan) experience but there is regional variation, in some areas (mountains, some northern areas) it's used; the French use a lot of it. I

Not commonly in my (Tuscan) experience but there is regional variation, in some areas (mountains, some northern areas) it's used; the French use a lot of it. I would avoid using it as a partial substitute of olive oil, however. Use butter if the recipe calls for it.