Oxtail bone broth in the slow cooker is made with roasted beef oxtail, aromatics, and enough water to barely cover the ingredients. Cook it on LOW for 12 hours, then continue for up to 4 more hours if the broth still tastes light. Strain it, cool it promptly, and remove the chilled fat before storing or using it.
This oxtail bone broth slow cooker recipe uses 3 pounds of oxtail and about 8 cups of water in a 6-quart slow cooker.
Jump to Recipe| Recipe detail | Recommended amount |
|---|---|
| Oxtail | 3 pounds |
| Water | About 8 cups, or enough to barely cover |
| Slow cooker | 6 quarts |
| Roasting temperature | 425°F |
| Roasting time | 35–40 minutes |
| Main setting | LOW |
| Default cooking time | 12 hours |
| Optional extension | Up to 4 additional hours |
| Expected yield | About 6 cups, depending on evaporation |
| Refrigerator storage | 3–4 days |
| Freezer storage | Up to 3–4 months for best quality |
Why Does This Slow Cooker Method Work?
Oxtail combines meat, bone, joints, fat, and connective tissue in one cut. Long, gentle cooking softens the connective tissue and gives the broth body, while roasting develops deeper color and savory flavor.
Because a slow cooker limits evaporation, use only enough water to barely cover the ingredients.
What Is Oxtail Bone Broth?
Oxtail bone broth is a strained cooking liquid made from beef tail pieces, water, vegetables, and aromatics.
Unlike oxtail soup, it is strained and used in soups, stews, gravy, rice, beans, and sauces.
A concentrated batch may form a soft gel after chilling. However, broth that remains liquid can still be successful when it tastes rich and concentrated.
Looking for a complete meal instead of a strained broth? Try the slow cooker oxtail soup recipe.
Is Oxtail Good for Bone Broth?
Yes. Using oxtail for bone broth provides beef flavor and collagen-rich joints in the same cut.
Choose medium meaty pieces and smaller joint-heavy pieces, ideally around 1½–2 inches thick.
Remove tender meat after 8–10 hours, refrigerate it, and return the bare oxtail bones for broth to the slow cooker.
Which Ingredients Do You Need?
- 3 pounds beef oxtail, preferably a mixture of meaty and joint-heavy pieces
- 1 large onion, quartered
- 2 carrots, cut into large pieces
- 2 celery stalks, cut into large pieces
- 1 head garlic, halved
- 2 bay leaves
- 1 teaspoon black peppercorns
- 1 tablespoon apple cider vinegar, optional
- 8 cups water, or enough to barely cover the ingredients
- Fine salt, added gradually after straining
Keep the vegetables large so they are easier to strain. For a more neutral beef oxtail bone broth, omit the carrots.
Apple cider vinegar is optional. It adds mild acidity but does not guarantee that the broth will gel.
Should You Wash or Blanch Oxtail Before Making Broth?
Do not rinse raw oxtail in the sink. Pat it dry with paper towels before roasting.
Blanching is optional for a lighter broth. Cover the oxtail with cold water, boil for 5 minutes, drain, and transfer it to the slow cooker.
Choose one preparation method:
| Goal | Preparation |
|---|---|
| Deepest flavor | Roast the oxtail |
| Clearest appearance | Blanch the oxtail |
| Least preparation | Add thawed oxtail directly |
Should You Roast the Oxtails First?
Roasting is optional, but it gives bone broth with oxtail a darker color and stronger savory flavor.
Arrange the pieces in one layer on a rimmed baking sheet. Roast at 425°F for 35–40 minutes, turning once, until browned around the edges.
| Method | Color | Flavor | Best use |
|---|---|---|---|
| Roasted oxtail | Deep brown | Rich and savory | Stews, gravy, sipping broth |
| Unroasted oxtail | Light brown | Clean and mild | Clear soups and noodles |
| Blanched oxtail | Pale and clear | Delicate | Light soup bases |
For smoky flavor, compare it with the smoked oxtail recipe.
How Much Water Should You Add?
For 3 pounds of oxtail in a 6-quart slow cooker, begin with about 8 cups of water.
Add enough water to barely cover the bones and vegetables, not several inches above them.
| Oxtail amount | Starting water | Cooker size |
|---|---|---|
| 2 pounds | About 6 cups | 4–5 quarts |
| 3 pounds | About 8 cups | 6 quarts |
| 4 pounds | About 9–10 cups | 7–8 quarts |
Add more water only when several pieces remain exposed. Too much water is the most common reason homemade broth tastes weak.
How Do You Make Oxtail Bone Broth in the Slow Cooker?
1. Roast the oxtail
Heat the oven to 425°F.
Arrange the oxtail on a rimmed baking sheet and roast for 35–40 minutes, turning halfway through.
2. Fill the slow cooker
Transfer the browned oxtail to a 6-quart slow cooker.
Add the onion, carrots, celery, garlic, bay leaves, and peppercorns.
3. Add the water
Pour in about 8 cups of water and the optional apple cider vinegar.
Use only enough liquid to barely cover the ingredients.
4. Cook on LOW
Cover and cook on LOW for 12 hours.
Continue for up to 4 additional hours if it still tastes light.
5. Save the meat
After 8–10 hours, remove any pieces whose meat pulls away easily.
Separate and refrigerate the meat, then return the bare bones to the cooker.
6. Strain the broth
Remove the large bones and vegetables with tongs.
Pour the liquid through a fine-mesh strainer into a heat-safe container. Do not press the softened vegetables through the strainer.
7. Season and cool
Add fine salt gradually after straining.
Divide the broth into shallow containers and cool it promptly before refrigerating.
How Long Should Oxtail Bone Broth Cook?
The recommended baseline is 12 hours on LOW.
Continue cooking toward 16 hours when the broth still tastes weak, the oxtail pieces are unusually large, or the batch contains additional bare bones.
| Setting | Time | Expected result |
|---|---|---|
| LOW | 12 hours | Recommended baseline |
| LOW | 14–16 hours | Stronger, more concentrated broth |
Use fully thawed oxtail. LOW provides the steadiest result when making oxtail bone broth in a slow cooker.
How Do You Know When the Broth Is Ready?
The broth should smell beefy, taste concentrated, and reduce slightly.
The meat should release easily from the bones. A cooled drop may feel lightly sticky between clean fingers, and the refrigerated broth may form a soft gel.
Do not judge it only by gel formation; water quantity and connective tissue also matter.
Why Did My Oxtail Bone Broth Not Gel?
Too much water is the most common cause.
Other possible reasons include:
- Too few joint-heavy pieces
- Insufficient cooking time
- Diluting the broth after cooking
- Checking it before it is completely cold
- Very little concentration in a tightly covered cooker
To fix thin broth, simmer it uncovered until reduced by about 20–30 percent. Chill a spoonful to test it.
Why Is My Bone Broth Cloudy?
Cloudiness usually comes from vigorous boiling, frequent stirring, fine particles, or emulsified fat.
For clearer broth:
- Cook on LOW.
- Avoid unnecessary stirring.
- Keep vegetables in large pieces.
- Strain gently.
- Do not press the solids.
A cloudy broth can still taste excellent.
Do You Need to Skim Foam From Oxtail Bone Broth?
Skimming is optional. Remove visible gray foam during the first hour for a cleaner-looking broth, especially when the oxtail was not roasted or blanched.
Can You Reuse the Cooked Oxtail Meat?
Yes. Remove the meat once it becomes tender so it does not turn dry and stringy.
Use it in:
- Oxtail soup
- Tacos or quesadillas
- Fried rice
- Pasta sauce
- Beef hash
- Dumplings
- Sandwiches
Add broth or sauce when reheating. Discard the cooked bones.
How Can You Use Oxtail Bone Broth?
Use the finished broth anywhere you would normally use beef stock:
- Slow cooker oxtail soup
- Oxtail stew
- Barley soup
- Brown gravy
- Rice and peas
- Beans
- Braised greens
- Risotto
- Noodle soup
- Pan sauces
Use roasted broth for stews and gravy, or lighter broth for clear soups. It also works in a slow cooker oxtail stew.
How Should You Store and Freeze It?
Divide the strained broth into shallow containers and refrigerate it promptly.
Once chilled, remove the firm fat layer from the surface.
Store it in the refrigerator for 3–4 days. Freeze it in measured portions for up to 3–4 months for best quality.
Freeze it in ice-cube trays or 1- to 2-cup portions.
Oxtail Bone Broth Recipe Card
Oxtail Bone Broth in the Slow Cooker
Ingredients
Method
- Heat the oven to 425°F. Arrange the oxtail in one layer on a rimmed baking sheet and roast for 35–40 minutes, turning once.
- Transfer the roasted oxtail to a 6-quart slow cooker. Add the onion, carrots, celery, garlic, bay leaves, and black peppercorns.
- Add the apple cider vinegar and about 8 cups of water. Use only enough water to barely cover the ingredients.
- Cover and cook on LOW for 12 hours. Continue cooking for up to 4 additional hours when a stronger broth is needed.
- After 8–10 hours, remove any pieces whose meat pulls away easily. Refrigerate the meat and return the bare bones to the slow cooker.
- Remove the large bones and vegetables. Pour the broth through a fine-mesh strainer without pressing the solids.
- Add salt gradually after straining. Divide the broth into shallow containers and refrigerate promptly.
- Once chilled, remove the solidified fat from the surface. Refrigerate the broth for 3–4 days or freeze it in measured portions.
Notes
Browse more slow cooker oxtail recipes in the Recipe Index.
Frequently Asked Questions
Is oxtail bone broth the same as oxtail stock?
They are made similarly. “Bone broth” often means a long-cooked broth, while stock is usually used as an ingredient; in home cooking, the terms overlap.
Is oxtail bone broth the same as oxtail soup?
No. Bone broth is strained and used as a cooking liquid. Oxtail soup is served as a complete dish with meat, vegetables, and broth.
Can I make it without roasting?
Yes. Unroasted oxtail makes a lighter broth. Roasted oxtail creates deeper color and flavor.
Does vinegar make the broth gel?
No. Vinegar adds acidity. Gelatin comes mainly from the oxtail’s connective tissue.
Is oxtail bone broth healthy?
It can provide protein and gelatin, but nutrition varies with dilution, cooking time, fat removal, and serving size. Treat it as food, not medical treatment.
Can I freeze oxtail bone broth?
Yes. Freeze it in measured portions so it is easy to use in soups, stews, rice, beans, and sauces.
