3 slow roasted onions with melted Recipes

veal shank , (4 lb) minus hock (10 to 12 inches long), sea salt and pepper, olive oil, unsalted butter, carrots, diced, celery stalks, diced, onion, diced, white wine, whole garlic cloves, bay leaves, thyme, parsley, peppercorns, green leek, bacon fat, duck fat, onion, sliced thin, shallots, sliced, head cabbage, shredded, salt and pepper to taste, caraway seeds, white wine, oxtail stock, unsalted butter, rice wine vinegar, unsalted butter, sugar, cippolini onions, salt to taste, thyme, chicken stock to cover, tomatoes , concasse (finely chopped), garlic, minced, ginger, grated, rice vinegar, sugar to taste, mustard seeds