To render beef tallow at home, melt cut-up kidney suet slowly in a heavy pot, then strain the clear fat through cheesecloth. That's the dry method. The wet method does the same work in a pot of water and adds an overnight chill before the strain. Either way, the fat sets white and firm.
We buy 100% suet, the dense fat from around the kidneys, from grass-fed and grass-finished cattle on Montana family ranches, bought direct. We buy the fat. We do not run the ranch. Our Montana render partner renders it low and slow, and our balms aren't made in a home kitchen now. They're blended in small batches in the Mountain West.
If you'd rather have the fat without the pot, Bare Silk ($34) is grass-fed suet tallow with four supporting ingredients. Prices here are as of October 5, 2026. Learning how to make beef tallow yourself is still worth a weekend, and the method below is for your own jars.
What suet should you buy, and how much?
Ask the butcher for kidney suet, the hard white fat packed around the kidneys. It's firm and crumbly. Trim is the other option, and it's the fat cut away from steaks and roasts in the cutting room, mostly fat cap and edges. It carries more meat and blood. So it renders darker and beefier than suet, though it still makes good cooking fat. Our post on suet, not trim goes deeper.
Plan on about 11 ounces of tallow from a pound of kidney suet, inside a 10 to 13 ounce range. Clean trim gives back less. Meaty trim returns under half its weight, and our render yield calculator does the math for any amount you buy. Render within a few days, or freeze the suet until you're ready. A 1962 University of Minnesota extension folder by Anderson gave raw pork fat five to seven days near freezing before rendering, and I'd hold suet to the same clock.
Prep's quick. Peel off the papery membrane and cut away any blood spots or red meat. Cold suet grinds cleanly, so chill it hard before it goes through a meat grinder or a food processor. Small cubes work too. Anderson's folder offered the same choice, cubes or a chopper, and smaller pieces give up their fat faster at a lower heat.
How do you dry render tallow?
Dry rendering tallow means fat and gentle heat, with no water left in the pot by the end. Start with a splash of water anyway. It'll keep the first melt from catching on the bottom, then boil off, which is how Anderson's folder started its kettle. Keep the burner low and stir often so nothing sticks.
Anderson put the working range at 235 to 245 F (about 113 to 118 C) and warned against overheating. For skin jars I'd run cooler, nearer 212 F (100 C). That's slower, and a clip-on thermometer in the fat takes the guessing out of the whole afternoon. You're done when the bubbling stops and the cracklings float. Those bubbles are water leaving.
Strain the hot fat into clean, dry jars through a sieve lined with at least two layers of cheesecloth. Then cool the jars fast. For the render itself, a slow cooker on low does the same job with less watching, as long as the lid sits cracked for the steam. The cracklings left in the cloth are browned bits of tissue. Salt them and eat them if you like, and keep them out of anything that's going on skin.
How does wet rendering work, and is it worth the extra day?
Wet rendering tallow starts with the ground suet covered in water, held at a gentle simmer for two to three hours. That's around 85 to 95 C (185 to 203 F). Many renderers add a spoon of salt to the water, and the salt never reaches your jar. Salt dissolves in water, not fat.
Strain the pot into a bowl and chill it overnight, and the fat rises into a cake on top. You'll lift the cake off in the morning. Scrape the soft, cloudy layer from its underside, and pour the gray water down the drain. Then give the cake a short dry finish: melt it and hold it until the bubbling stops, so no water stays behind.
The reason to bother is heat. Water caps the pot near its boiling point, so the fat can't scorch while there's water in it. People who wet render also want a paler and milder fat. It's the order our Montana render partner follows too: wet first, then a dry finish, as our post on how tallow is rendered for skin explains. What the extra day doesn't buy is shelf life. A 2024 storage study by Amaryllis and colleagues found dry-rendered and wet-rendered tallow oxidized at about the same pace.
| Step | Dry render | Wet render |
|---|---|---|
| In the pot | Suet and a splash of water | Suet covered in water |
| Heat | Low, under 245 F | A simmer, under a boil |
| Time | An afternoon | Two to three hours, then a night in the fridge |
| Extra step | None | Lift the fat cake, then a dry finish |
| Result | Faster, a little more color and scent | Paler and milder |
What goes wrong in the pot?
Most failures come down to heat or water. Too much heat browns the cracklings and gives the fat a roasted, beefy smell. Food chemists do it on purpose: Jin and colleagues (2022) built a strong-aroma tallow for cooking by holding it near 150 C (about 300 F) with air bubbling through. Their paper draws the line: fat oxidized at room temperature turns rancid, and fat oxidized under heat turns flavorful. A scorched pot makes skillet fat. Save it for potatoes and start the skin pot again, lower.
Grainy tallow set too slowly, and slow cooling lets the fat crystallize in coarse, uneven grains. Re-melt it gently and chill it fast. Anderson's folder put it in four words: rapid cooling is best. That's true of a finished balm too. Our post on melted or grainy jars covers that fix.
Water left in the fat shows up as beads or a cloudy layer under the cake. Finished tallow should hold none, and USDA's FoodData Central lists beef tallow at 100 grams of fat and zero water per 100 grams. Melt it and hold it until the bubbling stops. Specks in the jar mean the cloth wasn't fine enough, so strain it again through two fresh layers.
How to make beef tallow for skin: the extra steps
Skin tallow starts from suet at low heat and gets more cleaning than kitchen tallow. For a batch too big for a crock pot, the oven is the slow cooker idea with more room. The suet goes in a covered roasting pan in a low oven, around 200 to 250 F, and I'd keep a skin batch near the low end.
That cleaning is the rest of how to make beef tallow for skin, and renderers do it with a salt-water wash. Pour the melted fat over hot salted water and chill it until a cake sets on top. Lift the cake to scrape the gray layer off its underside, then repeat once or twice until the water runs clear. That's how to purify and clean beef tallow for skin, and the salt stays in the water.
Finish it dry so no water stays: melt the washed cake and hold it until the bubbling stops and the fat runs clear. Those are the signs any render's done. Strain it twice into dry jars, the second pass through fresh, fine cloth. Small jars filled to the top keep best cold and dark, and the next section covers the freezer. Our post on rendering tallow for skin walks the wash through by weight. The one on the beefy smell covers a jar that still smells like a roast.
How long does it keep, and when is it skincare-grade?
Fat goes off by oxidation, and a 2019 review by Domínguez and colleagues lists warmth and light among the things that speed it. Iron from leftover blood speeds it too, which is one more reason to trim suet clean. In the 2024 Amaryllis study, both kinds of tallow kept at 25 C (77 F) for 180 days climbed past the Codex limit for peroxide value. Peroxide value marks early oxidation. The dry and wet readings were 17.3 and 16.9, against a limit of 10. The same tallow kept at 4 C (39 F) sat at 4.8, though the authors still measured changes in it. Fill small jars near the top and keep them dark and cold. Freeze anything you won't open within a few months, and thaw it in the fridge when you need it.
Rancid tallow smells like old crayons or stale nuts, and that jar's headed for the trash, as our post on how long tallow balm lasts explains.
Skincare-grade fat passes four checks at the counter. The fat came from suet, it never browned, it went through a fine cloth and it holds no water. It sets white to pale cream and smells faintly of warm oil. On my bench the nose decides, and anything that smells like a roast goes to the kitchen. If you render tallow for skin, try each new jar on the inside of your arm for a few days first, on intact skin. It's cosmetic care, not a treatment. Your provider's plan comes first.
Which jar should you buy if you'd rather skip the pot?
Rendering beef tallow makes a good afternoon, and I think anyone who uses tallow should try it once, if only to smell the difference suet makes. Bare Silk is the shortcut. It's suet tallow with four supporting ingredients, and the Unscented original has no essential oils or fragrance. That's the jar I'd compare your own render against, smell first. If you'd like to blend your own balms without the pot, the Craft Tallow Kit ($110, on pre-order with about a three-week ship window) ships rendered suet base jars alongside the botanical vials. The Kit adds a warming plate and a pipette, and its recipe deck covers all five balms.
Start with Bare Silk ($34), five ingredients and sixty days to disagree.
Questions we hear
How long does it take to render beef tallow at home, start to finish?
A dry render takes most of an afternoon at low heat. You're done when the bubbling stops and the cracklings float, which can take longer with a big pot. A wet render runs two to three hours at a simmer, then needs an overnight chill and a short dry finish the next day. Grinding the suet first shortens both, since small pieces give up their fat faster.
Can you render tallow in a slow cooker?
Yes, and a slow cooker on low is the easiest way to keep the heat gentle for hours. Add the ground suet with a small splash of water. Leave the lid cracked so steam can escape, and it'll be slower than the stove but harder to scorch. Strain it through doubled cheesecloth once the bubbling stops. Cool the jars fast afterward, since quick cooling helps the fat set smooth instead of grainy.
Do you have to wet render tallow for skin?
No. A slow dry render from clean kidney suet makes skincare-grade fat, as long as it never browns and ends with no water in it. Wet rendering gives a paler, milder fat for the price of an extra day. It doesn't buy shelf life, though, since a 2024 study by Amaryllis and colleagues found both kinds oxidized at about the same pace in storage.
Why does my homemade tallow smell like beef?
Usually the pot ran too hot, and sometimes the fat you started with was trim instead of kidney suet. Browned cracklings and a hot pot build roasted, beefy flavor compounds, which is why food chemists heat tallow on purpose when they want it to taste of beef. Next time, start from suet and don't let the fat climb past a lazy simmer. The beefy one's for the skillet.
How much tallow do you get from a pound of suet?
Plan on about 11 ounces of finished tallow from a pound of kidney suet, inside a 10 to 13 ounce range. The method changes the time and the smell, and it doesn't move the yield much. Clean trim gives back less. Meaty trim returns under half its weight, and our render yield calculator runs the numbers for any amount.
Can you render beef tallow in the oven?
Yes, and it's the slow cooker method with room for a bigger batch. Put the ground suet in a covered roasting pan in a low oven, around 200 to 250 F. Crack the lid or uncover the pan for the last stretch so the steam can leave. Once the bubbling stops, strain the fat through doubled cheesecloth into clean, dry jars and cool them fast.
How do you know when tallow is done rendering?
Watch and listen. The bubbling stops and the pot goes quiet, since those bubbles were water leaving the fat. The fat runs clear, and the cracklings float, golden at the edges and never dark. If you've got a clip-on thermometer in the fat, hold the fat near 212 F and don't let it climb. Dark cracklings mean the pot ran too hot for a skin jar.
How do you purify beef tallow and get the beef smell out?
Start from kidney suet instead of trim and keep the heat low, and most of the smell never gets in. A salt-water wash takes out what's left. Pour the melted fat over hot salted water and chill it into a cake, then scrape off the gray layer and repeat until the water runs clear. Industry strips the smell with steam and high heat, which also hides a hot render. Will it smell like beef? has the rest.
How do you store rendered tallow?
Pour it into small, clean jars filled near the top, so little air sits over the fat, and keep them cold and dark. Cold slows oxidation without stopping it. A 2024 study by Amaryllis and colleagues found tallow kept in the fridge for six months oxidized far less than tallow kept at room temperature. Freeze anything you won't open within a few months.
Go deeper
When your jar's set, whipped tallow 101 and how to make whipped tallow balm carry the fat into a finished balm. If the smell worries you, start with our post on whether tallow smells like beef. The beef tallow for skin guide covers what the fat does once it's on, and grass-fed vs grass-finished tallow covers the pasture side. Wet render vs dry render goes further on what the water does in the pot and why none of it can stay in the jar.
Sources
- Jin Y and colleagues (2022). Optimization and preparation of tallow with a strong aroma by mild oxidation. Molecules 27(24):9047.
- United States Department of Agriculture, Agricultural Research Service (2019). Fat, beef tallow. FoodData Central database, SR Legacy release, FDC ID 171400, USDA.
- Domínguez R and colleagues (2019). A comprehensive review on lipid oxidation in meat and meat products. Antioxidants 8(10):429.
- Anderson PA, University of Minnesota Institute of Agriculture (1962). Animal fat rendering. Extension Folder 120, revised edition of February 1962.
- Amaryllis AR and colleagues (2024). Quality and oxidative stability of tallow extracted by dry- and wet-rendering. Indonesian Food Science and Technology Journal 8(1).
Brian is the founder of Craft Tallow, a small-batch tallow skincare line shipped from Cottonwood Heights, Utah, built on 100% grass-fed suet. Questions? Reply to any email from us; it lands with him.