Chicken gizzards are a nutrient-dense organ meat with high protein and natural collagen

Chicken gizzards—the muscular stomach of the bird—contain roughly 26 grams of protein per 3-ounce serving, making them one of the most protein-rich foods available by weight. They also supply collagen and related compounds that your body uses to build and repair connective tissue, skin, and joints. Unlike chicken breast, which is lean muscle, gizzards are an organ meat, so their nutrient profile is different: they're lower in fat but higher in certain minerals and amino acids your body cannot make on its own.

Gizzards have been eaten across cultures for centuries—they're common in African, Asian, Latin American, and European cuisines—but they've become less familiar in mainstream Western cooking. That shift has less to do with nutrition and more to do with changing food habits and marketing. If you're exploring protein sources beyond standard cuts, gizzards offer a practical, affordable option that delivers what you're looking for.

Key Takeaways

  • Chicken gizzards contain about 26 grams of protein per 3-ounce serving, comparable to chicken breast but with a different amino acid profile.
  • Gizzards supply collagen and gelatin-like compounds that support skin, joint, and connective tissue structure.
  • They are rich in iron, zinc, and B vitamins, particularly B12, which many people don't get enough of.
  • Gizzards are affordable, shelf-stable when frozen, and work in soups, stews, stir-fries, and braised dishes.
  • Texture and taste are acquired preferences; slow cooking or marinating makes them more tender and palatable for new eaters.

How much protein and collagen gizzards actually contain

A 3-ounce (85-gram) serving of cooked chicken gizzards contains approximately 26 grams of protein and about 3 grams of fat. For comparison, the same serving of chicken breast has roughly 26 grams of protein and 1 gram of fat. The protein content is nearly identical, but gizzards deliver it in a package that includes more minerals and a different balance of amino acids—the building blocks your body uses to construct muscle, skin, and other tissues.

The collagen in gizzards comes from the connective tissue that makes up the gizzard's muscular wall. When you cook gizzards slowly—in a broth, stew, or braised dish—some of that collagen breaks down into gelatin, a form your digestive system can absorb. This is the same process that happens when you simmer chicken bones or beef tendons for bone broth. The amount of collagen varies depending on how long you cook the gizzards and the cooking method; longer, moist cooking extracts more.

Minerals and vitamins in chicken gizzards

Beyond protein and collagen, gizzards are notably rich in iron and zinc. A 3-ounce serving supplies roughly 2.5 to 3 milligrams of iron (about 15% of the daily target for adult men, and 30% for adult women) and about 4 to 5 milligrams of zinc. Iron is essential for carrying oxygen in your blood; zinc supports immune function and wound healing. Both minerals are more bioavailable—easier for your body to absorb—from meat sources than from plant sources.

Gizzards are also an excellent source of B vitamins, especially B12, which your body needs for nerve function and red blood cell formation. A single 3-ounce serving can supply 50% or more of the daily B12 target. This matters particularly if you eat little or no other animal products, or if you have conditions that affect nutrient absorption. Gizzards also contain B6, niacin, and pantothenic acid, all involved in energy metabolism.

How gizzards fit into a collagen-supporting diet

Collagen is the most abundant protein in your body—it makes up roughly 30% of your total protein. It's the structural component of skin, tendons, ligaments, cartilage, and bone. As you age, your body produces less collagen and breaks down existing collagen faster, which is why skin loses elasticity and joints become stiffer. Eating collagen-rich foods like gizzards doesn't directly replace collagen in your skin or joints, but it supplies the amino acids and minerals your body needs to synthesize new collagen.

Gizzards work best as part of a broader approach: they're one source of protein and collagen among many. Bone broth, skin-on chicken, fish with bones, and gelatin desserts also supply collagen. Pairing gizzards with vitamin C (from citrus, peppers, or leafy greens) and adequate overall protein helps your body use those amino acids efficiently. Think of gizzards as a nutrient-dense addition to your regular rotation, not a replacement for other protein sources.

Taste, texture, and how to prepare gizzards

Chicken gizzards have a firm, chewy texture and a mild, slightly gamey flavor—less intense than liver, but noticeably different from chicken breast. The texture comes from the muscle tissue; the flavor comes from the bird's diet and the organ's function. If you're new to organ meats, the texture and taste can take adjustment. Marinating gizzards in acidic liquids (lemon juice, vinegar, or soy sauce) for 30 minutes to an hour before cooking softens the tissue and mellows the flavor.

Slow cooking is the most forgiving method: braising in a covered pot with broth, tomatoes, or wine for 45 minutes to an hour breaks down the muscle fibers and makes gizzards tender. Stir-frying works too, but requires slicing them thin and cooking over high heat for just a few minutes to avoid toughness. Gizzards also work well in soups and stews, where they simmer for extended periods and contribute collagen to the broth. Avoid overcooking, which makes them rubbery; aim for tender but still intact.

Cost, availability, and storage

Chicken gizzards are significantly cheaper than chicken breast—often one-third to one-half the price per pound—because they're considered a byproduct in Western markets. You'll find them in the poultry section of most grocery stores, often packaged with other organ meats like hearts and livers. Some stores sell them separately; others bundle them. Asian, Latin American, and African markets typically have a larger selection and may offer them fresh or frozen at lower prices.

Frozen gizzards keep for several months in a standard freezer. Thaw them in the refrigerator overnight before cooking, or cook them directly from frozen if you're braising or simmering—just add 10 to 15 minutes to the cooking time. Fresh gizzards should be cooked within one to two days of purchase. Because they're an organ meat, they're more perishable than muscle meat, so check the date and store them on the coldest shelf of your refrigerator.

Potential concerns and who should be cautious

Gizzards are safe for most people, but a few groups should be aware of considerations. They are high in cholesterol (roughly 250 milligrams per 3-ounce serving), so people managing cholesterol levels may want to eat them in moderation or balance them with other protein sources. They're also high in purines, compounds that break down into uric acid; people with gout or a history of kidney stones may need to limit them. If you have questions about whether gizzards fit your diet, a doctor or registered dietitian can help you decide.

Gizzards should always be cooked thoroughly to a safe internal temperature (165°F or 74°C) to reduce the risk of foodborne illness. Use a meat thermometer to check, especially if you're cooking them for the first time. Store raw gizzards separately from ready-to-eat foods to prevent cross-contamination.

Frequently Asked Questions

Do gizzards have as much collagen as bone broth?

Gizzards contain collagen, but bone broth—made by simmering bones and connective tissue for many hours—typically yields more collagen per serving. However, gizzards are a whole food you can eat directly, whereas bone broth requires preparation. Both can be part of a collagen-supporting diet; the choice depends on your preference and time.

Can I eat gizzards if I'm vegetarian or vegan?

No, gizzards are animal meat and not suitable for vegetarian or vegan diets. If you're looking for plant-based collagen sources, consider legumes, seeds, and leafy greens paired with vitamin C, which support your body's collagen production.

How do I know if gizzards have gone bad?

Fresh gizzards should smell mild and look firm and moist. Discard them if they smell sour, look slimy, or have changed color to gray or brown. When in doubt, throw them out—organ meats spoil faster than muscle meat.

Are gizzards from different birds (duck, turkey, pork) similar nutritionally?

Duck and turkey gizzards are similar to chicken gizzards in protein and collagen content, though duck gizzards tend to be slightly fattier. Pork gizzards (heart and other organs) have comparable protein but a different nutrient profile. Nutritional values vary by bird and cut, so check labels if you're comparing.

Can I use gizzards in a slow cooker?

Yes, slow cookers are ideal for gizzards. Cook them on low for 6 to 8 hours or on high for 3 to 4 hours with broth and vegetables. The long, moist heat breaks down the muscle tissue and extracts collagen into the cooking liquid, which you can drink or use as a base for soup.