Stock vs. Broth: What’s the Difference?

A delicious soup starts with a good broth. A rich sauce needs a gelatinous stock. Or is it the other way around? The term stock and broth are frequently used interchangeably in recipes and even store-bought products. But is there really a difference between the two? And can you swap one out for the other when you’re in a pinch? Here’s what chefs say. 

What is stock? 

“Stock is all about the bones,” says Dan Jacobs, chef and co-owner of EsterEv and DanDan in Milwaukee, Wisconsin, and runner-up on Top Chef season 21. “You cook them low and slow to pull out collagen. That’s why a good stock gets jiggle-city when it’s cold. It’s not something you usually sip on its own — it’s a foundation for sauces, soups, and braises. It’s the building block.”

Think of a leftover turkey carcass after Thanksgiving or other holiday dinners. We’ll often pick the meat off the carcass then add the roasted bones to a large pot, cover with cold water, and cook very low and slow. This long, slow process of cooking the turkey bones produces a dark, rich stock.

From a culinary science perspective, the bones are the critical part of a stock. “Bones release collagen, which converts into gelatin at 160°F to 180°F,” Jacobs explains. “This gives stock its body, viscosity, and that chilled Jell-O texture.” 

This is also how Angelo Caruso, chef-owner of Angelo’s Ristorante in Stoneham, Massachusetts, explains stock versus broth. “Stock is an unseasoned, bone-based liquid used as a foundation for sauces, soups, and reductions.”

Stocks may be made with just about any bones, like chicken backs, beef knuckles, veal bones, or even fish carcasses, Caruso explains. Aromatics like onions, celery, and carrots may be added along with the bones, but it’s really the bones that sets stock apart from broth. 

“Bones are often roasted first to build depth, then simmered gently for several hours to extract collagen and marrow, which gives stock a rich, almost gelatinous texture when cooled,” Caruso says.

What is broth? 

Where stock puts the focus on bones, broth highlights the meat. Yes, you can make broth from vegetables alone, but in most situations, broth refers to a light yet flavorful meaty liquid. (It’s not to be confused with bone broth, which is typically more similar to a stock.) 

“Broth is more about the meat,” Jacobs explains. “It’s lighter, cleaner, and actually seasoned. Broth is something you can drink straight or ladle into a soup. It’s already a finished product.” As the meat slowly cooks, flavor compounds, amino acids, and aromatic elements infuse the liquid. “This gives broth its immediate flavor and roundness.”

While stocks can be made with only bones, it’s very common for broths to employ generous aromatics in addition to meat. The aromatics help develop flavor, providing a ready-to-serve liquid, whereas stock may actually taste a bit flat despite its richness.

“[At restaurants], stock is intentionally unsalted and relatively neutral,” Jacobs says. “Its job is to give structure, mouthfeel, depth, and emulsification of sauces. If you salt it early, as it reduces in other dishes, the salt compounds and becomes unmanageable.” Broth, on the other hand, is frequently seasoned with salt right from the beginning of the cooking process.

“It remains liquid when chilled and has a finished flavor profile, making it perfect for sipping on its own or using in dishes like soups, risottos, and grains where a flavorful, ready-to-serve liquid is needed,” says Caruso.

Different cook times

The other important difference between stock and broth is in the preparation. The cook time plays a huge role in the flavor and texture of a broth and stock. A rich stock made with chicken bones often takes four hours or more to simmer, while a beef stock can take 12 hours or even a full day, depending on volume and desired collagen extraction level. For home uses, it’s best to start your stocks early in the morning and let them simmer very slowly all day, or use a pressure cooker.

Broths, on the other hand, take a fraction of the time. Chicken broths usually take one to two hours while beef or veal broth will take about two to four hours. This is long enough to extract flavor from meat, but it can actually be too long for some vegetables. Fish stock and broth are in a bit of their own worlds. Fish stock can take as little as 30 minutes or up to an hour while broth may take about half that time.

Are they interchangeable?

You can generally swap out broth and stock in recipes without disastrous results. An exception is pan sauces or reductions, where a good-quality stock helps with thickening. “When buying at the grocery store, it’s hard to tell the difference between the two,” says Evan Hennessey, chef-owner of Stages at One Washington, The Living Room, and the forthcoming Topolino in Dover, New Hampshire. “The viscosity is the same and they differ only by a color, the broth being a lighter version.”

If you make soups often, though, simmering your own stock or broth is worth it.

“Commercially made stocks and broths pale in comparison to what you can make in your own kitchen,” says Hennessy. “Plus in your kitchen, you get to choose the ingredients, thus dictating the flavor outcome.”