Grass-Fed Marrow & Soup Bones

Marrow and soup bones aren't a cut of meat in the usual sense, they're the leg bones left over once the surrounding muscle has been removed for steaks and roasts. Every animal we process produces these, which makes them one of the most naturally available parts of the cow, and also one of the most overlooked.

What's Actually Inside a Marrow Bone

Marrow is the soft, fatty tissue inside the hollow center of a long bone, most commonly the femur. It's almost entirely fat by composition, along with a smaller amount of protein and micronutrients, which is why roasted marrow has such a distinct, rich texture, closer to a spread than anything resembling meat. Soup bones serve a different purpose, they're used whole or sawed into pieces specifically for extracting flavor, collagen, and minerals into a long-simmered liquid, rather than for eating the bone itself.

Marrow Bones vs Soup Bones

These are often sold as the same product because they frequently come from the same bones, just prepared or cut differently. Bones cut into shorter, wider rounds with the marrow exposed are typically roasted and eaten directly from the bone. Bones left longer or added whole to a stockpot are what most people mean by soup bones, used purely to build a broth rather than eaten themselves. We cut ours to work for either use.

Roasting Marrow Bones

Roasting is the simpler of the two preparations. Place bones marrow-side up on a baking sheet and roast at 450°F for 15 to 20 minutes, until the marrow is soft and slightly pulling away from the bone edges. Scoop it out with a small spoon and spread it on toasted bread, traditionally finished with a pinch of flaky salt and something acidic like a parsley and shallot salad to cut through the richness.

Making Bone Broth

For broth, bones go into a stockpot or slow cooker covered with water, often with a splash of vinegar added at the start, which helps draw minerals out of the bone during the long simmer. A slow cooker on low for 12 to 24 hours, or a stovetop simmer at the lowest possible heat for the same window, extracts collagen and flavor gradually over that extended time. Roasting the bones first, the same way you would for marrow, before adding them to the pot deepens the final flavor of the broth considerably. Add aromatics, onion, carrot, celery, a bay leaf, partway through, since they don't need nearly as long as the bones do to release their flavor. Strain the finished broth and skim off the fat that rises to the top once it's cooled, or leave some in for a richer result, that's a matter of preference.

Why Grass-Fed Marrow & Soup Bones Matters Here

An animal's diet affects bone and marrow composition the same way it affects everything else on the animal. Grass-fed bones and marrow are generally associated with a different fatty acid profile than grain-fed, more Omega-3s, in line with the same pattern that shows up across grass-fed muscle meat and organs. For a broth you're planning to drink regularly or use as a real part of your diet, that sourcing detail carries more weight than it would for an occasional pot of soup.

What to Do With Finished Broth

Bone broth keeps well in the refrigerator for about 4 to 5 days, or freezes for several months, portioned into smaller containers so you're not thawing more than you need at once. Use it as a base for soups and stews, or simply drink it on its own, warmed with a bit of salt, which has become common practice for people using bone broth as a regular part of their diet rather than just a cooking ingredient.

Storage and Thawing

Bones ship flash-frozen. Thaw in the refrigerator over about 24 hours before roasting or adding to a pot, there's no need to fully thaw if you're adding them directly to a slow cooker with plenty of cooking time ahead. From the same 100% grass-fed, grass-finished herd as every cut we sell, raised on pasture in St. Marys, Pennsylvania, nothing here set aside or sourced differently.