Ingredients

5 pounds veal bones 

2 tablespoons olive oil 

4 celery stalks, coarsely chopped 

1 onion, coarsely chopped 

3 medium to large carrots, coarsely chopped 

1 can (6 ounces) tomato paste 

1 teaspoon sugar 

1 tablespoon whole black peppercorns 

6 cloves garlic, smashed 

3 sprigs fresh thyme 

1 dried bay leaf 

2/3 cup white vinegar 

2 cups red wine 

Preparation

Heat oven to 325 degrees. Place a large roasting pan in oven, and heat for 5 minutes. Add veal bones, and roast, stirring frequently, until golden brown, 40 to 50 minutes.

Warm oil in a medium stockpot over medium heat. Add celery, onion, and carrots, and cook for about 6 minutes. Add tomato paste, sugar, peppercorns, garlic, thyme, bay leaf, vinegar, and wine. Bring to a boil. Reduce to a simmer, and cook for about 15 minutes.

Add the veal bones, and enough water to cover the bones by 1 inch. Return to a boil. Reduce to a simmer, and cook, skimming occasionally, for 3 to 4 hours.

Strain, discarding solids. Skim fat. Cool to room temperature, then store in airtight containers.