Make Sauce
Pulse celery, onion, carrot, and fennel until lightly chopped.
Heat oil.
Cook vegetable mixture 5 to 8 minutes until caramelized.
Add garlic and stir quickly.
Add wine and reduce until dry.
Add pureed tomatoes, 3½ cups water, and oregano.
Simmer 1 hour on low heat, stirring occasionally.
Add fresh basil leaves.
Puree sauce.
Season with salt.
Make Meatballs
Preheat oven to 175°C.
Mix ricotta, egg, egg yolk, milk, garlic, and oregano.
Combine veal, pork, and ricotta mixture. Mix well.
Add salt, panko, and Parmesan. Mix well.
Form 1½ oz. meatballs.
Place meatballs on a baking sheet.
Bake 15 to 20 minutes until internal temperature reaches 71°C.
