Trippa alla Fiorentina Recipe | Food Network

Ingredients

• 1 yellow onion, diced
• 1 carrot, diced
• 1 stalk celery, diced
• 1 tablespoon unsalted butter
• 2 tablespoons extra-virgin olive oil
• 3 pounds tripe, blanched and boiled
• 1 pound tomatoes, peeled and finely chopped
• Salt, for seasoning
• Parmesan, for sprinkling