Rub the 1 kg veal roast with salt, pepper, and 1 teaspoon grated sage.
Heat 2 tablespoons olive oil in a large pot or Dutch oven over medium-high heat. Add the veal roast and brown it on all sides, about 10 minutes.
Add 2 cloves finely chopped garlic, 2 large finely chopped onions, 2 stalks sliced celery, 4 peeled tomatoes, and 1 teaspoon chopped basil. Cook for 2 minutes over medium-high heat.
Add 0.25 liter white wine and 1 teaspoon bouillon paste. Cover, reduce heat to low, and braise for 1 hour.
Add 4 large carrots (cleaned, peeled, and cut into small pieces). Continue braising covered over low heat for 30 minutes, until the veal reaches an internal temperature of 63°C (145°F). Add water or wine if the liquid level becomes low.
Remove the roast from the pot and slice it. Transfer to a warm serving plate.
Strain the sauce through a sieve into a clean pot. Stir in 1 tablespoon chopped parsley. Season with salt and pepper to taste.