We Now Render Our Own Bison Tallow (And Every Jar Got Better)

The short answer: for the first time, every product we make is built on tallow I render myself — from hand-trimmed bison suet, in stainless steel, with distilled water and a mineral-clean sea salt, low and slow for most of a day, washed until the water runs clear. The first block that came out of that process was, honestly, the best tallow I have ever touched. It's now in every jar.

I want to show you the process — because the effort is the point, and because I think you deserve to know what your skin is getting. I'll keep a few specifics to myself (the exact ratios, temperatures, and timing took a lot of testing to get right), but nothing about the care is a secret.

It starts with the right fat

Not all fat on an animal is the same. The fat we use is suet — the dense, waxy, snow-white fat from around the kidneys, sometimes called leaf fat. It's the most prized fat on the animal: higher in stearin than any other, cleaner, firmer, with a higher melting point. For centuries it was the fat set aside for the finest tallow. A bison, lean by nature, carries only a limited amount of it, which is part of why it's treated like a delicacy. If you want the deeper story, I've written about what bison tallow actually is.

Then the slowest part: trimming by hand

Before anything is heated, every piece of suet is trimmed by hand — any tissue, membrane, or anything that isn't pure waxy white fat comes off. This is the longest step in the whole process and it's the one most producers skip, because it's tedious. It matters because what you leave in the pot ends up in the tallow: impurities are where off-scents and off-colors come from. Clean in, clean out.

A gentle, wet render — in stainless steel only

The trimmed fat goes into stainless steel with distilled water — no chlorine, no contaminants — and a small amount of sea salt from ancient mineral deposits chosen for what it doesn't carry: no microplastics, no heavy metals. Then it's held at a gentle temperature, well below boiling, for most of a day. Low heat is the whole philosophy: hot, fast rendering scorches fat and degrades the fat-soluble vitamins that make tallow worth using on skin in the first place. Nothing in this process ever touches plastic.

Filtering, chilling, and washing until the water runs clear

The liquid fat is filtered through unbleached organic cotton cloth — no dyes, no glue at the seams — then chilled until it sets into a solid block. And here's the step that separates good tallow from great: it gets washed again. The block goes back through fresh salted water, is chilled again, and the layer at the bottom where impurities settle is scraped away. Repeat until the water comes out clear. What's left is a dense, pure-white block with almost no scent at all.

A brief, gentle finish

At the very end, the block is warmed just enough to evaporate any remaining water — briefly, so the fat's nutrients aren't degraded. Water is what invites spoilage; removing the last of it is what makes the finished tallow naturally shelf-stable without preservatives.

What changed in the jar

Every product now uses this tallow, and the difference shows up in texture first — smoother, cleaner, better-behaved in the jar — then in scent, which is milder than anything we've worked with. Customers who've used both generations noticed before I said a word. It's the same hands doing the rendering that pour the jars, and I think that continuity is the quiet secret of the whole thing: nobody who outsources their tallow trims it piece by piece.

If you want to feel the difference, the Hydrating Cream is where it shows most.

Frequently asked questions

What is suet? The dense, waxy white fat from around an animal's kidneys — also called leaf fat. It's higher in stearin, cleaner, and firmer than other fats, with the highest melting point on the animal, and it's the traditional choice for the finest tallow.

Is wet rendering better than dry rendering? For skincare tallow, a gentle wet render with salted water gives a cleaner, milder result: impurities settle into the water and get washed away, and the low temperature protects the fat's natural vitamins. A brief dry finish at the end removes the last water for shelf stability.

Why does Ancient Nature render its own tallow? Control over every step — the fat grade, the hand trimming, the temperature, the washing, the equipment. The result is cleaner, milder, better-textured tallow, and every product now uses it.

Does the tallow touch plastic? No. Stainless steel, glass, and unbleached organic cotton cloth, start to finish.