Nitrate-Free Biltong: What's Actually in the Cure
Published UpdatedNitrate free biltong is the ordinary case, not a specialty version. Traditional biltong is cured with vinegar and salt and then dried in cool moving air for days, so it needs no sodium nitrite, no potassium nitrate and no pink curing salt.
The acid drops the surface pH, the salt pulls water out of the beef, and airflow finishes the work. That's the whole cure. It's worth understanding properly, though, because "no nitrates" is one of the most slippery phrases on a meat snack label, and the ingredient that most often breaks the promise reads like a vegetable.
What nitrates and nitrites do in cured meat
Sodium nitrite's the working ingredient in what butchers call curing salt #1, pink salt, or Prague powder #1. It's a blend of table salt with about 6.25% sodium nitrite, dyed pink so nobody spoons it into a stew. Potassium nitrate, the older form, is saltpeter; bacteria convert it into nitrite over time, and that's why it turns up in long-aged products.
In a processor's plant they do three jobs. They fix the pink color people expect from ham and bacon, they produce the tangy flavor we recognize as "cured," and they form part of the safety system for meats held warm, moist, smoked, fermented or vacuum-packed for months — the conditions where Clostridium botulinum is a live concern. Bacon, ham, smoked sausage and salami are all built around that chemistry.
None of that's an argument about whether nitrites are good or bad for you. It's a description of a job. Biltong simply doesn't have that job open.
Why nitrate free biltong works without curing salts
Biltong reaches a stable, edible state through physical hurdles rather than a chemical one:
- Acid. The beef gets soaked or wiped with vinegar before spicing. That drops the pH at the surface — exactly where surface bacteria live.
- Salt. Salt draws moisture out of the meat by osmosis and keeps drawing while the strips hang.
- Airflow and time. Days of cool moving air take the water activity down far enough that microbes have nothing to work with. No heat step, no smoke, no oven.
Jerky takes a different road: it's typically cooked, often smoked, frequently sweetened, and in many commercial recipes cured with nitrite to survive that process. Biltong never sits warm and wet, which is the specific window curing salts were invented to cover.
| Ingredient | Also labeled as | What it does | In traditional biltong? |
|---|---|---|---|
| Sodium nitrite | Curing salt #1, pink salt, Prague powder #1 | Color fixing, cured flavor, part of the safety system in warm or fermented cures | No |
| Potassium nitrate | Saltpeter, curing salt #2 (with nitrite) | Slow-release nitrite for long-aged products | No |
| Celery juice powder | Cultured celery extract, "naturally occurring nitrate" | The same nitrite chemistry, from a vegetable source | No |
| Vinegar | Brown vinegar, apple cider vinegar, malt vinegar | Lowers surface pH before drying | Yes |
| Salt | Sea salt, coarse salt | Draws out water, seasons the beef | Yes |
Celery powder is a nitrate source, even on a clean label
Here's the useful part of the article. Cultured celery juice powder is celery concentrated for its naturally high nitrate content, then treated with a starter culture that converts that nitrate into nitrite. It's added to meat for the same reasons sodium nitrite is added to meat, and it does the same chemistry once it's in there.
US labeling rules have historically pushed such products to be sold as "uncured" with a qualifier along the lines of no nitrates or nitrites added except those naturally occurring in celery powder. Read literally, that's accurate. Read quickly in a supermarket aisle, it's the reason a lot of people believe they've been avoiding nitrites for years.
If nitrate sources are what you're screening for, celery powder belongs on your list next to sodium nitrite. The word on the packet is different; the ingredient's job isn't.
What to look for on a biltong or jerky label
- Sodium nitrite or potassium nitrate — the direct forms.
- Celery juice powder, cultured celery extract, or the word uncured with a footnote — the indirect form.
- MSG, monosodium glutamate, or yeast extract — common in commercial meat snack seasonings, absent from traditional biltong spicing.
- Liquid smoke — a jerky and smoked-sausage ingredient. Biltong is dried, never smoked.
- Sugar, dextrose, brown sugar, honey, or "natural flavors" — sweeteners are near-universal in American jerky and have no place in a traditional biltong cure.
A short ingredient statement isn't proof of anything on its own, but a long one's usually telling you something.
The food safety research on air-dried beef
The obvious question follows: if there's no nitrite and no cooking step, what's keeping dried beef safe? Researchers have put the traditional process to that test. Work published in the journal Microorganisms examined the biltong process against the USDA-FSIS benchmark of a greater than 5-log reduction in pathogens for dried beef products, and found the combination of acid, salt and drying capable of meeting it without a heat step (PubMed summary).
That's the scientific version of what South African households worked out over a couple of centuries: acid, salt, air, patience. More on the sequence in how biltong is made from raw silverside to finished slab.
What is in ours
Billi Tong's Biltong is beef, salt, pepper, coriander, Worcestershire sauce and white vinegar — no MSG, no artificial additives; full ingredients on the bag. Air-dried for days by our maker, Backcountry Beef, a USDA-inspected South Carolina kitchen, for an Austin brand — check the bag for the full panel.
It's a traditional South African cure, made by our maker, and biltong came with me everywhere — Taiwan, Fiji, most of Southeast Asia — without anybody needing to add pink salt to it. Customs officials had questions; nitrites weren't among them.
Two spice profiles: The Classic, the traditional coriander-forward cure, and Hill Country Heat, the same cure with chili behind it. Both are protein-packed, and each bag carries its own full ingredient panel.
FAQ
Is biltong nitrate free?
Traditional biltong is nitrate free. The cure is vinegar and salt followed by days of air drying, so sodium nitrite and potassium nitrate are not needed and are not typically used. Some commercial brands do add curing agents or celery powder, so the ingredient panel is the only reliable check.
Does biltong have nitrates?
Traditional biltong has no added nitrates or nitrites. The cure is vinegar and salt followed by days of cool air-drying, which does the preserving job that curing salts do in bacon, ham and salami. Some commercial brands add sodium nitrite or celery powder, so read the ingredient panel on the specific bag before assuming.
Does biltong contain sodium nitrite?
Traditional biltong contains no sodium nitrite. Sodium nitrite is used in meats held warm, smoked, fermented or aged for months, such as bacon, ham and salami. Biltong is dried cool with no heat step, so the acid and salt do the work that nitrite does elsewhere. Check the panel on any brand.
Is celery powder the same as nitrates?
Celery juice powder is a nitrate source. Celery is naturally high in nitrate, and cultured celery extract has been treated so that nitrate converts to nitrite before it reaches the meat. Products using it are often labeled uncured with a footnote. If you are screening for nitrate sources, include it.
Is beef jerky nitrate free?
Most commercial beef jerky is not nitrate free. Jerky is usually cooked or smoked and many recipes include sodium nitrite or celery powder alongside sugar and liquid smoke. Some brands leave all of it out. The ingredient statement, not the front of the bag, is where the answer sits.
Does biltong need curing salt to be safe?
Biltong does not require curing salt. Research published in Microorganisms found the vinegar, salt and air-drying process capable of meeting the USDA-FSIS greater than 5-log pathogen reduction standard for dried beef without a heat step. Correct salt levels, a genuine vinegar step and real airflow are what matter.
If you'd rather not decode a label to get the traditional version of a meat snack, the store isn't open yet, but the $100 Founding 50 first-batch box is buyable now — fifty numbered spots, full refund if it never launches. Questions about the panel go to cal@btbiltong.com.
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