What Are Soup bones and How Can I Use Them?

Soup bones is easier to cook with than it looks. Here's how to choose, use, and store them, what to substitute, and 16 recipes to get you started.

Key Points

Cheap meaty beef or veal bones for stock; buy both marrow bones and gelatin-rich knuckle bones.
Roast at 400°F (200°C) for 45 to 60 minutes for deep brown stock; skip it for pale broth.
Simmer 6 to 8 hours at a bare bubble, never a rolling boil, so the stock stays clear.
Skim the early foam and salt only at the end, since stock concentrates as it reduces.
Finished stock keeps 4 days refrigerated, freezes 6 months, and sets to jelly when chilled.

What are soup bones?

Soup bones are exactly what the name says: meaty beef or veal bones sold cheap for the express purpose of making stock and long-simmered soups. The butcher's case usually offers two kinds, and a good batch has both.

Marrow bones are the cut shank and leg sections, hollow tubes packed with soft, fatty marrow that melts into the pot. Knuckle and joint bones are the knobby ends, full of cartilage and connective tissue that breaks down into gelatin.

That gelatin is the whole reason to bother. It gives homemade stock the silky body and lip-sticking richness that no carton from the store can match.

Making Stock with Soup Bones

Roast the bones first if you want a deep, brown stock. Spread them on a sheet pan and roast at 400°F (200°C) for 45 minutes to an hour until well browned, turning once.

That browning is what gives beef stock its color and savory depth, the step behind a proper Beef Stock- Master Chefs.

Skip the roasting only when you want a pale, clean broth. White veal stock for delicate sauces, like Veal Stock- Master Chefs, goes into the pot raw or just blanched, so it stays light in color.

Then it is a long, low simmer. Cover the bones with cold water, bring them up slowly, then hold a bare simmer for hours. Never let it reach a rolling boil.

Beef and veal bones want 6 to 8 hours or more. The collagen takes that long to convert to gelatin.

Skim the gray foam that rises in the first half hour. That scum is coagulated protein, and skimming it off keeps the finished stock clear instead of cloudy.

Pairing and Common Mistakes

Aromatics go in toward the end, not the start. A simple mirepoix of onion plus carrot and celery, with a bay leaf and peppercorns, rounds out the flavor.

But vegetables added at hour one simmer to mush and turn bitter, so add them for the last hour or two.

The bones build the base of countless dishes. They carry the broth in Pho(Beef Noodle Soup), where charred beef bones simmer for hours into a clear, fragrant stock. They also enrich hearty bowls like Beef & Root Vegetable Soup with Homemade Stock and the long-cooked Backyard Booyah.

The most common mistake is boiling hard. A violent boil emulsifies the rendered fat back into the liquid and churns up the proteins, leaving you with greasy, cloudy stock. Keep it at a lazy bubble the whole time.

The second mistake is salting early. Stock reduces as it simmers, so salt added at the start concentrates into something far too salty by the end. Season the finished dish, not the pot.

Substitutes

If you have no soup bones, the closest swap is bone-in beef shank or oxtail, both of which carry plenty of marrow and gelatin along with their meat. They cost more but give a richer, meatier result.

For pure gelatin without much flavor, ask the butcher for chicken feet or pork trotters and add a few to the pot. They are collagen bombs that thicken any stock. A spoonful of powdered gelatin stirred into store-bought broth fakes the body, though not the flavor.

When you have no time at all, a good store-bought beef or veal stock will carry a recipe. Choose a low-sodium one so you can season it yourself.

Buying and Storing

Ask at the meat counter; soup bones are often kept in the back and sold for very little. The best selection has both marrow bones for richness and knuckle bones for gelatin, so buy a mix.

Look for bones with some meat still clinging to them for flavor. They should be a fresh red color with no gray or sour smell. Frozen soup bones are common and work just as well as fresh.

Raw bones keep in the fridge for a day or two, or freeze for several months until you are ready to make stock. There is no rush; bones freeze beautifully.

Finished stock keeps about 4 days in the fridge and freezes for up to 6 months. A well-made batch sets to a wobbly jelly when chilled, which is the gelatin doing its job and the sign you did it right.