The Perfect Bone Broth Recipe (24-Hour Slow Simmer Method)

Let me tell you something that the food industry doesn't want you to think about too carefully. Sometime in the mid-20th century, your grandmother stopped making broth from bones and started dissolving little foil-wrapped cubes of sodium, MSG, and vegetable oil into hot water instead. The bouillon cube manufacturers told her it was easier, more convenient, and just as good.

It wasn't. It isn't. And the nutritional consequences of that switch — of replacing one of the most mineral-dense, collagen-rich, traditionally nourishing foods in human history with a processed flavor packet — were not nothing.

Bone broth is not a trend. It's not a wellness fad invented by influencers in 2015. It is the most ancient prepared food on earth. Humans have been simmering bones in water for as long as we've had fire. Archaeological evidence suggests bone marrow extraction and broth-making goes back at least 400,000 years. Your great-grandmother made it. Her great-grandmother made it. Every traditional food culture on earth — French, Japanese, Vietnamese, Mexican, Korean, Ethiopian — built foundational dishes around long-simmered bone broths.

What's new is that we stopped. And it's worth starting again.

🔑 KEY TAKEAWAYS

- Bone broth is one of the most nutrient-dense foods available: rich in collagen, glycine, proline, minerals, and gelatin

- Samonina et al. (2000) documented bone broth's ability to support gut healing and gastric mucosal integrity

- Dar et al. (2015) confirmed collagen peptide availability and absorption from bone broth preparations

- The 24-hour slow simmer method extracts maximum gelatin, collagen, and minerals from bones

- Grass-fed and pasture-raised bones produce dramatically superior broth — the fat quality matters

- A good broth gels when refrigerated — the gel test is your quality indicator

Why Bone Broth Is the Most Nutrient-Dense Food on Earth

That's a strong claim. Let me support it.

Collagen and Its Breakdown Products

Bone broth's signature nutrient is collagen — the most abundant protein in the mammalian body, accounting for roughly 30% of total body protein. Collagen forms the structural matrix of skin, bones, tendons, ligaments, cartilage, blood vessels, and connective tissue throughout the body. When bones, joints, and connective tissue are simmered in water for extended periods, collagen is extracted and partially hydrolyzed into gelatin and bioavailable collagen peptides.

Dar et al. (2015) investigated the collagen content and availability of bone broth preparations, confirming that the collagen extracted through long simmering is bioavailable and provides meaningful quantities of hydroxyproline, glycine, and proline — the distinctive amino acids of collagen that are often under-represented in muscle-meat-heavy modern diets.

The significance: collagen provides amino acids — particularly glycine and proline — that most people are severely deficient in. Modern diets emphasize muscle meat (steak, chicken breast, ground beef) and essentially ignore the collagen-rich parts: bones, cartilage, skin, tendons. Our ancestors ate whole animals and used every part. We eat mostly muscle. The result is a dietary imbalance in amino acid ratios that wasn't part of traditional eating patterns.

Gut Healing Properties

This is the area of bone broth research I find most compelling. Samonina et al. (2000) published research documenting the effects of bone gelatin on gut health, specifically its ability to support gastric mucosal integrity — the protective lining of the stomach and intestinal walls. Gelatin, which is cooked collagen, has been used in traditional medicine and early clinical nutrition specifically because of its gut-protective properties.

The amino acid glycine, abundant in bone broth, plays a role in maintaining the integrity of tight junctions in the gut wall — the connections between intestinal cells that prevent undigested food particles and bacterial components from crossing into the bloodstream. When tight junctions are compromised (a condition sometimes called "leaky gut," more formally known as intestinal permeability), it's associated with inflammatory and autoimmune conditions.

I'm not going to overclaim. The research on gut healing from broth consumption is promising but not fully settled. What I can say is that bone broth has been used in traditional medicine for intestinal convalescence — recovery from illness, digestive distress, and gut disorders — across multiple cultures for millennia. That's a long track record worth taking seriously. Probiotics Vs Prebiotics

Mineral Bioavailability

When bones are simmered in slightly acidic water — which is why we add apple cider vinegar to broth — minerals leach from the bone matrix into the liquid. We're talking about calcium, magnesium, phosphorus, potassium, and trace minerals in forms that are bioavailable to the body. The exact mineral content varies significantly based on the source of bones, duration of simmering, and the acidity of the cooking liquid.

Glycine: The Conditionally Essential Amino Acid

Most people have never heard of glycine. I think about it a lot. Glycine is technically a non-essential amino acid — the body can synthesize it — but research increasingly suggests that endogenous synthesis cannot meet the body's demand, making it "conditionally essential" in significant physiological quantities. Glycine is required for collagen synthesis, bile acid conjugation, creatine synthesis, glutathione production, and plays important roles in sleep quality and neurological function. Bone broth is one of the few foods that provides glycine in meaningful quantities. Muscle meat is a poor source.

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Choosing Your Bones

The quality of your broth is entirely determined by the quality of your bones. This is non-negotiable.

Grass-Fed and Pasture-Raised

Pasture-raised animals store fat-soluble vitamins, omega-3 fatty acids, and CLA (conjugated linoleic acid) in their fat and bones. The marrow of grass-fed beef contains a completely different fatty acid profile than the marrow of grain-fed confined animals. You want grass-fed beef bones and pasture-raised chicken carcasses — not because it's trendy, but because the nutritional profile is genuinely superior and the animals lived better lives.

Beef Bones vs. Chicken Bones

Beef bones produce a darker, richer, more deeply flavored broth with a higher mineral and gelatin content. Ideal cuts: knuckle bones (highest gelatin), marrow bones (rich and buttery), oxtail (excellent gelatin + some meat), neck bones, and short ribs. Roasting beef bones before simmering is non-negotiable — it's the step that transforms raw-smelling collagen into deeply savory, caramelized broth.

Chicken bones produce a lighter, more delicate broth with a faster extraction time. Chicken feet are the secret weapon — they're almost pure collagen and turn even a modest batch into a gel-set broth. Chicken necks and backs are also excellent and inexpensive. Whole carcasses from roast chicken are ideal. I keep a zip-lock bag in my freezer that I fill with chicken carcasses over time; when it's full, I make broth. My family goes through a batch every two weeks at minimum.

Fish bones (dashi, fish stock): much shorter simmer time — 30 to 45 minutes maximum. Beyond that, fish broth turns bitter. A different product from meat-based broth but nutritionally valuable.

Where to Source Good Bones

• Your local butcher (often available for free or very inexpensively — butchers frequently have surplus bones)
• Farmers markets — small farms selling grass-fed beef usually have bones available
• Local ranchers (look for small farms in your area)
• Asian grocery stores (excellent selection of unusual cuts at low cost)
• Online sources: US Wellness Meats, Belcampo, Force of Nature

The Complete 24-Hour Bone Broth Recipe

This is the recipe I've been making for years, refined through probably 200 batches. It's the one I'd teach my kids. It's the one my grandmother would recognize, even if she'd raise an eyebrow at the apple cider vinegar.

Ingredients

• 3 to 4 lbs grass-fed beef bones (knuckle, marrow, oxtail — mixed is best)
• Filtered water to cover (about 3 to 4 quarts)
• 3 tablespoons apple cider vinegar (raw, unfiltered — this acidifies the water slightly to draw minerals from bones)
• 2 medium onions, quartered (no need to peel)
• 4 stalks celery, roughly chopped
• 3 medium carrots, roughly chopped
• 8 cloves garlic, smashed
• 2 bay leaves
• 1 tablespoon whole black peppercorns
• Small bunch fresh thyme or parsley (optional but recommended)
• 1 to 2 teaspoons sea salt (add at the end to control saltiness)

Equipment

• Large stockpot (8 quart or larger) OR slow cooker OR Instant Pot
• Roasting pan
• Fine-mesh strainer or cheesecloth
• Wide-mouth glass jars for storage (quart-size mason jars work perfectly)

Instructions: The 24-Hour Method

Step 1: Roast the bones (mandatory for beef; optional for chicken). Preheat oven to 425°F. Spread bones in a single layer on a rimmed baking sheet. Roast for 35 to 45 minutes, turning once halfway, until deep brown and caramelized. You're looking for serious color — deep mahogany, not pale. The Maillard reaction happening on the surface of those bones is what transforms the flavor from bland to extraordinary. Don't skip this.

Step 2: Deglaze the roasting pan. Pour a cup of cold water into the hot roasting pan and scrape up the browned bits with a wooden spoon. Add these liquid and fond directly to your stockpot. This step captures flavor that would otherwise stay stuck to the pan.

Step 3: Combine bones and water. Transfer roasted bones to a large stockpot. Add all vegetables, garlic, peppercorns, and bay leaves. Pour in the apple cider vinegar. Add enough filtered water to cover everything by about 2 inches — typically 3 to 4 quarts.

Step 4: The bloom period. Let the pot sit, unheated, for 30 minutes. This allows the apple cider vinegar to begin its work of drawing minerals from the bone matrix before heat starts driving off the acidity.

Step 5: Bring to temperature and skim. Place pot over medium-high heat. Bring slowly to just below a boil. As it heats, grey foam and scum will rise to the surface — this is coagulated proteins and impurities from the bones. Skim this off thoroughly with a spoon. This step is important for producing a clear, clean-tasting broth. Once skimming is complete and no more foam is rising, reduce heat.

Step 6: Low and slow — 24 hours. Reduce heat to the lowest possible setting — you want a bare simmer, just a few lazy bubbles breaking the surface. This is critical. A boiling broth produces a cloudy, greasy result. A gentle simmer extracts gelatin and collagen slowly and cleanly. Cover partially with a lid.

If using a slow cooker: Transfer everything to the slow cooker, set to LOW, and leave it for 24 hours. Set it and genuinely forget it.

If using a stovetop: Check periodically to maintain a bare simmer and top off with water as needed if the level drops significantly. This requires more attention but produces excellent results.

The ideal simmer temperature is between 185°F and 200°F — well below boiling, which is 212°F. A kitchen thermometer lets you confirm this.

Step 7: Add fresh herbs in the last 2 hours. Add your fresh herbs (thyme, parsley) in the final 1 to 2 hours of cooking. Herbs lose their aromatic compounds over a long cook time, so adding them late keeps the herbal notes fresh and bright.

Step 8: Strain. After 24 hours, remove the pot from heat. Place a fine-mesh strainer over a large bowl or another pot. Pour broth through the strainer, pressing on the solids to extract all liquid. For the clearest possible broth, strain through a layer of cheesecloth as well. Discard all solids — the bones and vegetables have given everything they have.

Step 9: Season and cool. Taste the broth and add sea salt to your preference. Let broth cool at room temperature for 30 to 45 minutes, then refrigerate overnight. Do not put hot broth directly into the refrigerator — it will raise the refrigerator temperature and stress your other foods.

The Instant Pot Quick Method

The 24-hour method produces the deepest flavor and highest gelatin content. But on a Tuesday when you forgot to start broth yesterday, the Instant Pot method is a perfectly respectable backup.

Instructions: Follow steps 1 through 4 above (roast the bones — still non-negotiable). Transfer everything to the Instant Pot. Set to HIGH pressure for 3 to 4 hours (most Instant Pots max out at 6 hours; set it as high as yours will go). Natural release. Strain, season, cool.

The Instant Pot at high pressure reaches higher temperatures than a stovetop simmer, which extracts gelatin more rapidly. The trade-off is some flavor complexity. My honest assessment: Instant Pot broth is 80% as good as 24-hour broth in 20% of the time. It gels reliably if your bone selection is good. For everyday cooking broth, totally excellent. For a showstopper French onion soup or a precious batch to gift someone, take the full 24 hours.

The Gel Test: How to Know Your Broth Is Good

This is the quality test. After refrigerating your broth overnight, remove it from the refrigerator. A high-quality bone broth should be partially to fully gelled — it should wobble and jiggle like Jell-O, not slosh like water. This gel is the gelatin extracted from collagen in the bones. More gel = more collagen = higher nutritional value = better broth.

Fully gelled (the ideal): Broth holds its shape and wobbles solidly. Excellent knuckle or cartilage bone selection, well-extracted.

Lightly gelled: Thickened but not fully solid. Decent, still nutritious. Could use more cartilage-rich bones next time.

Not gelled at all: The broth didn't extract enough gelatin. Possible causes: bones were too lean (not enough collagen), broth was diluted with too much water, simmer time was insufficient, or wrong cut selection.

If your broth doesn't gel, it's still nutritious and flavorful — but add chicken feet or more knuckle bones next time.

Storage Methods

Refrigerator: Broth keeps in the fridge for 5 to 7 days in sealed glass jars. The fat will solidify on top — a natural preservation layer. Don't remove it until you're ready to use the broth.

Freezer: This is my primary storage method. I freeze broth in quart-sized mason jars (leaving 1.5 inches of headspace for expansion — I learned this the hard way when frozen broth cracked my jars), ice cube trays (then transfer cubes to a bag — perfect for adding small amounts to sauces and rice), and silicone muffin molds for 1/2 cup portions. Frozen broth keeps 3 to 4 months with no quality loss.

Reduced concentrate: Simmer finished broth over medium heat until reduced by half or more, creating a concentrated "broth concentrate" that stores in much less space. Reconstitute by mixing 1 part concentrate with 1 part water.

5 Ways to Use Bone Broth Beyond Soup

1. Cook Your Grains in Broth Instead of Water

Rice, quinoa, farro, and polenta cooked in bone broth instead of water absorb the broth as they cook, picking up minerals, gelatin, and flavor. The resulting grains are more nutritious, more flavorful, and have a luxurious, slightly rich quality that water-cooked grains can never match.

2. Sip It Straight

Many people — especially those focused on gut healing or collagen support — consume broth as a daily drink, like tea or coffee. One 8-ounce mug of warm, lightly salted broth in the morning is an ancestral wellness habit that costs essentially nothing and provides a meaningful dose of glycine, collagen peptides, and minerals. I keep a jar at my desk most mornings. It sounds strange until you try it.

3. Deglaze Pans

After searing meat, fish, or vegetables, pour a splash of broth into the hot pan and scrape up the browned bits. This simple pan sauce technique is the foundation of classical French cooking and it works with home kitchens too. The resulting deglazing liquid is deeply savory, full of those Maillard-reaction compounds from the sear.

4. Braise and Slow Cook

Every slow cooker recipe that calls for liquid is better with bone broth than with store-bought broth. See every recipe in Easy Slow Cooker Recipes — they all call for broth, and homemade bone broth elevates every single one.

5. Make Real French Onion Soup

This is the pinnacle use. Homemade beef bone broth + deeply caramelized onions + a crusty crouton from real sourdough bread (Sourdough Starter Recipes) + properly aged Gruyère, broiled until bubbling and charred at the edges. There is nothing better in cold weather. Nothing. The soup is impossible to make well with anything other than deeply gelatinous, homemade broth. Commercial broth produces a watery disappointment. Real broth produces the real thing.

The Uncomfortable Truth About "Broth" at the Grocery Store

Here's my controversial opinion: almost nothing labeled "broth" or "stock" at the grocery store is actually broth. Read the ingredients. Most commercial broths are essentially flavored water — water, salt, yeast extract, chicken or beef "flavor," and sometimes a small amount of actual chicken or beef. No bones. No long simmering. No gelatin. No collagen. The "reduced sodium" versions are even more diluted.

The products that come closest are the bone broths you'll find in the refrigerated section of natural food stores — Kettle & Fire, Brodo, Bonafide Provisions. These are better, genuinely. But they cost three to four dollars per quart. A batch of homemade broth from bones that cost very little (or free from the butcher) produces 3 to 4 quarts for cents per serving.

Once you've made your own and watched it gel in the refrigerator, you'll never look at a carton of commercial broth the same way.

Probiotics Vs Prebiotics

Frequently Asked Questions

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Frequently Asked Questions

How long should I simmer bone broth?

For beef bones, 18 to 24 hours is optimal. For chicken bones, 12 to 18 hours. Fish bones need only 30 to 45 minutes. Longer isn't always better for flavor — beyond 24 hours, beef broth can start developing slightly bitter or mineral-heavy notes. Aim for the 20 to 24 hour sweet spot for beef.

Do I have to roast the bones first?

For beef, yes — strongly recommended. The roasting step creates the Maillard reaction on the bone surface, producing hundreds of new flavor compounds that give beef broth its characteristic deep, savory quality. Raw beef bones produce a paler, less flavorful broth. For chicken, roasting is optional — if you're using a roasted chicken carcass, it's already been roasted.

Why add apple cider vinegar?

The acidity of apple cider vinegar slightly lowers the pH of the cooking water, which helps draw minerals from the bone matrix into the broth. The actual acid in the finished broth is minimal — you can't taste it — but the mineral extraction effect is significant. Use 2 to 3 tablespoons per batch.

Can I reuse bones?

You can do a second simmer with the same bones, but the resulting broth will be significantly weaker in gelatin and flavor. First-simmer broth is the good stuff. If you want to get every last bit out of expensive knuckle bones, a second run is still nutritious — just more of a light broth than a rich one.

What should I do with the bone marrow during cooking?

Some cooks prefer to scoop out the marrow from marrow bones before simmering and spread it on toast (roasted bone marrow on toast is a delicacy in its own right). Alternatively, let it simmer into the broth, where it contributes fat, minerals, and richness. If simmering in, skim excess fat from the surface of the finished broth for a cleaner result.

Is store-bought bone broth as nutritious as homemade?

In most cases, no. Genuinely high-quality brands (Kettle & Fire, Brodo) come close, but most commercial "bone broths" are inadequately gelled or diluted. The gel test is your guide: if a commercial broth doesn't gel when refrigerated, it didn't have enough long-simmered collagen and gelatin — which is the whole point.

How much bone broth should I drink per day?

There's no established recommended daily intake, but traditional cuisines that used broth regularly consumed 1 to 2 cups per day as part of meals. One to two cups daily as a foundation — in cooking, as a warm drink, or in soups — is a reasonable and sustainable approach. More than that is unlikely to be harmful for most people, but the evidence base for specific therapeutic quantities is still developing.

Make the Broth Your Great-Grandmother Made

There is no supplement, no protein powder, no collagen capsule that replicates what a proper pot of bone broth does. The food industry gave us bouillon cubes, then cartons, then powder packets. They were convenient. They were cheap. They were not the same thing.

Bone broth is a craft. It takes time. It fills your house with a smell that is hard to describe — ancient, warming, deeply savory, like something important is happening. It is. Something important is happening.

Start a batch tonight. Set it on LOW at 10 PM, go to bed, and wake up to 4 quarts of something your body genuinely recognizes as food.

Easy Slow Cooker Recipes

This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before making changes to your diet or exercise routine.