Liquid stock is a flavorful cooking liquid made by simmering bones, vegetables, and aromatics in water for several hours. It serves as the foundation for soups, sauces, gravies, braises, and countless other dishes, providing depth of flavor and body that water alone can’t deliver. What sets stock apart from plain broth is the use of bones, which release proteins during cooking that give the liquid a rich, silky texture.
Stock vs. Broth
The terms “stock” and “broth” get used interchangeably in most kitchens, but they refer to slightly different things. Stock is made by simmering bones (with or without meat still attached) alongside vegetables and herbs for 4 to 6 hours. Broth is lighter: vegetables and meat simmered in water for 45 minutes to 2 hours, with no bones involved.
The bones are the key distinction. During those long hours of simmering, connective tissue in the bones breaks down and releases collagen, which converts into gelatin. That gelatin is what gives a well-made stock its characteristic body. You’ll notice it when a cooled homemade stock turns jiggly in the fridge, almost like loose Jell-O. When reheated, that gelatin melts back into the liquid and coats your palate, making sauces feel richer and soups feel more satisfying even without added cream or fat.
This is also why “bone broth,” despite the name, is technically a stock. The inclusion of bones and the long simmer time put it squarely in the stock category.
What Goes Into Stock
A basic stock starts with three components: bones, aromatic vegetables, and herbs. The vegetable base is a French preparation called mirepoix, typically made from onions, carrots, and celery in a ratio of roughly 2 parts onion to 1 part carrot to 1 part celery. These vegetables aren’t the star of the dish. They provide a savory, slightly sweet backdrop that rounds out the flavor of the bones.
For herbs, most cooks rely on a few staples: bay leaves, thyme, parsley stems, and whole black peppercorns. These are often tied together in cheesecloth (called a sachet) so they’re easy to remove. Rosemary, tarragon, and oregano show up depending on the cuisine and the cook’s preference, but the classic combination is deliberately mild so the stock stays versatile.
Common Types of Stock
Not all stocks are created the same way. The two broadest categories are white stock and brown stock, and the difference comes down to one step: roasting.
Brown stock starts by roasting the bones and vegetables in a hot oven until they develop deep color. This browning creates complex, caramelized flavors and gives the stock a darker appearance. It’s the go-to for rich beef stews, red wine sauces, and hearty gravies. White stock skips the roasting. The bones are used raw or briefly blanched, producing a lighter, more neutral liquid that works well in delicate soups, cream sauces, and risottos.
Beyond the white-brown distinction, stocks vary by the protein used:
- Chicken stock is the most common all-purpose variety, mild enough to work in nearly any recipe.
- Beef or veal stock is deeper and more robust, often used for brown sauces and braises.
- Fish stock (fumet) is the quickest to make, simmering for only 20 to 45 minutes. It uses bones and heads from mild, white-fleshed fish. Oily fish like salmon or mackerel are avoided because they create an overpowering flavor. Dry white wine is usually added to the simmering liquid, lending a clean, bright quality that balances any fishiness. The aromatics lean toward white and green produce: onions, leeks, fennel, celery, and parsley, with carrots often left out to keep the color pale.
- Vegetable stock uses no bones at all, relying entirely on a mix of vegetables and herbs simmered for about an hour.
How Stock Is Used in Cooking
Stock is one of the most versatile ingredients in a kitchen. Its most obvious use is as the base for soups and stews, but it plays a much wider role than that.
When you cook a piece of meat in a hot pan, browned bits stick to the bottom. Adding a splash of stock to that hot pan (a technique called deglazing) loosens those flavorful bits and creates the foundation of a pan sauce. You can reduce stock by simmering it down, concentrating its flavor and body into a glossy, intensely savory sauce that clings to food. Stock is also the preferred liquid for braising, where tough cuts of meat cook low and slow in liquid until tender. Using stock instead of water means the braising liquid itself becomes something worth eating, often served as a sauce alongside the finished dish.
Rice dishes like risotto and pilaf benefit from being cooked in stock rather than water, absorbing flavor with every addition of liquid. Grains, beans, and even mashed potatoes all improve when stock replaces some or all of the water in the recipe.
Store-Bought Stock
Commercial liquid stock is widely available in cartons, cans, and shelf-stable boxes. Most retail stock is processed through a method called aseptic packaging, where the liquid is heated to a high temperature for a short time, then cooled and sealed in sterilized containers. This approach gives the product a shelf life of up to about a year without refrigeration, and it preserves more flavor and nutrition than traditional canning methods that cook at lower temperatures for longer.
The trade-off with commercial stock is sodium. Regular store-bought varieties can be quite salty. Products labeled “low sodium” contain 140 milligrams of sodium or less per serving, while “reduced sodium” simply means 25 percent less than the regular version, which can still be significant. “No salt added” means no salt was introduced during processing but doesn’t guarantee a specific sodium level. If you’re watching your salt intake or want more control over seasoning, low-sodium or unsalted versions give you the most flexibility.
Many commercial stocks also include flavor enhancers like yeast extract to compensate for shorter cooking times and fewer bones than a homemade batch would use. Reading the ingredient list gives you a sense of how close a product is to traditional stock. Shorter ingredient lists with recognizable items (chicken, water, onions, carrots, celery, salt) tend to taste cleaner.
Homemade Stock
Making stock at home is straightforward and a good way to use kitchen scraps. Save chicken carcasses from roast dinners, shrimp shells from a stir-fry, or vegetable trimmings like onion ends, celery tops, and carrot peels in a bag in the freezer. When you have enough, cover them with cold water, add your aromatics, and simmer.
Chicken and meat stocks benefit from 4 to 6 hours of gentle simmering. The key word is gentle: a rolling boil breaks fat into tiny droplets that make the stock cloudy and greasy. A bare simmer, with just a few bubbles breaking the surface, extracts flavor and gelatin while keeping the liquid clear. Fish stock is the exception, needing only 20 to 45 minutes since fish bones break down quickly and can turn bitter if overcooked.
Once strained, homemade stock keeps in the refrigerator for about five days or in the freezer for several months. Freezing stock in ice cube trays or muffin tins gives you portioned amounts you can grab for deglazing a pan or enriching a quick weeknight sauce without thawing a full batch.