Braised Lamb Osso Buco

Osso Buco 5 pieces lamb shank- we were lucky to find them from Australia! 1 cup flour 1 yellow onion- chopped 2 celery stalks- washed and chopped 4 carrots- washed, peeled and chopped 1 zest of lemon- using a vegetable peeler for large strips 4 cloves garlic- chopped 2 bay leaves 2 leeks- washed and…