Brine Fermented Peppers in a Ball Jar

Making fermented hot sauce is a unique method for preserving fresh peppers and other produce. Fermenting peppers is also a method for creating a hot sauce without vinegar.

With a proper pH, the sauces can keep in the refrigerator for many months, and we believe the sauces improve in flavor over time.

In This Article

• What is lactofermentation?
• Avoid potential risks
• Making fermented hot sauce (steps)
• What pH should it be?
• When is fermentation done?
• Fermented flavor
• How long does it last?
• Kahm yeast

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What is Fermentation (Lactofermentation)?

Like it or not, bacteria are everywhere. For the folks who don’t like the sound of that, many bacteria are beneficial to our overall health. If you’ve eaten yogurt, you have likely heard of the benefits of “live active cultures.” This benefit is also present in any fermented food, including hot sauce!

Fermentation is a natural microbial process that occurs when organic materials are broken down into simpler molecules by bacteria. Lactofermentation is the process that occurs in most food fermentation, and is perpetuated by the lactobacillus bacteria, which is contained on most plants, vegetables and within the human body.

“Lactobacillus exhibits a mutualistic relationship with the human body, as it protects the host against potential invasions by pathogens.”

(Source)

Fermentation is used to produce wine, beer, liquors and many other common foods like sauerkraut and kimchi. Fresh produce is submerged in a salty brine and deprived of oxygen. This environment is unlivable for most other forms of bacteria, but is perfect for lactobacillus.

The lactobacillus is then free to extract energy from carbohydrates like sugars by good bacteria, producing lactic acid and CO₂. This lowers the pH of the product, thereby preserving it safely.

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Lacto Fermentation Dangers

One of the common questions regarding lacto-fermentation is, “is it dangerous?” Put simply, lactofermentation is not dangerous when set up and monitored properly. However, precautions should be taken to avoid common issues with fermentation, including mold growth and spoiling.

Here are the common signs that lactofermentation has gone wrong:

• Rotten smell
• Fuzzy mold growth on surface
• Overly slimy vegetables
• Rancid flavor (spit it out!)

Avoiding these negative outcomes is easy if you follow our steps to producing a healthy ferment from the start.

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Making Brine Fermented Hot Sauce

There are two basic methods of fermenting peppers for hot sauce. The first is by making a simple pepper mash. This involves finely chopping or food processing the peppers, adding 2-8% salt by weight, and compressing the mixture into a fermentation vessel to remove all air pockets.

Mashes are great to use as a base for hot sauce, but usually require the addition of more ingredients after fermentation. They also take up less space, as the produce is chopped before fermenting.

The other method is to create a salt brine and submerge whole or sliced produce in the liquid. This is the method we will share today, as it is an all-in-one method to produce a hot sauce.

The process of fermenting hot peppers is very simple. However, it is not a set-it-and-forget-it method of preservation. You will have to monitor your ferment on a once-daily basis to avoid any potential issues along the way.

Materials & Ingredients

• Glass jars
• Air lock lids (Get on Amazon)
• Fermentation weights (Optional, get on Amazon)
• Kosher or sea salt (without iodine or anti-caking agents)
• Filtered water (chlorine-free)
• Hot peppers
• Fresh garlic (optional, but recommended)
• Other produce (optional, such as carrots, onions, cauliflower, etc.)

How To Make Brine Fermented Hot Sauce

Fermentation Brine (How To Get It Right)

Getting the proportions of salt-to-water correct is important. The goal is to have a 2-3% concentration of salt in the water by weight. Using grams, weigh both the water and the peppers/produce and multiply it by 0.025. Add at least that amount of salt to the mixture.

Tip: Be sure to factor in the amount of space your peppers will take up in the jars. Too much salt will result in an overly salty sauce.

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What pH Should My Fermented Hot Sauce Be?

We always test the pH of our fermented hot sauce to ensure it is adequately acidic. As fermentation takes place, the pH will drop lower and lower, becoming more and more acidic.

To put it simply, aim for a pH of 3.7 or lower when making fermented hot sauce. This ensures that your sauce will have a safe and long shelf life in the refrigerator. Some people target a pH of 3.5 for fermented hot sauce.

Technically, any pH below 4.6 will be stable, but we like to be cautious and allow our ferments to become very acidic before processing further.

• Test your hot sauce’s pH using a cheap pH meter like this one.
• We use a more reliable Apera meter – Get it here.

How To Lower pH of Hot Sauce

If your sauce is tasty, but the pH is too high, you can add vinegar to bring the pH lower. Add a few tablespoons of vinegar (white, white wine, apple cider, etc.), blend, and test the pH again. Once it is at or below 3.7, you can store it in the refrigerator.

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How To Tell When Fermented Peppers Are Done

Fermentation will continue until you force it to slow by refrigerating. Foods fermented for longer tend to have a less sweet, more sour flavor. Each person will prefer a different level of fermentation.

In short, fermented peppers are done when they have a more sour, pungent aroma and flavor. After the first 2 weeks, test your ferment regularly until it has reached the desired flavor.

Some people prefer a longer ferment for a more *funky* flavor, while others like a milder ferment. You can ferment your sauce as long as you like, so long as it doesn’t grow mold or spoil.

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What Does Fermented Hot Sauce Taste Like?

You may not know it, but many of the most common table hot sauces are fermented. Ever heard of Tabasco? What about Frank’s RedHot? Yep, both use fermented pepper mash as a primary ingredient.

Fermented hot sauces have a slightly sour taste that is typical of many fermented foods. During fermentation, bacteria consumes sugars and other carbohydrates, reducing sweetness and developing a more acidic, sour flavor.

The reason for the slightly sour flavor is the production of lactic acid during the fermentation process. These acids replace sugars, and lead to a very distinctive flavor profile. The flavor of fermented hot sauce is difficult to describe in full, but it can be loosely described as slightly sour with an overall tangy character.

To really know how fermented hot sauce tastes, try making some yourself with our guide above!

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How Long Will Fermented Hot Sauce Last?

Most fermented foods will last for months or even years when refrigerated. Over time, the flavor of your fermented hot sauce will continue to develop, often becoming more and more delicious. However, some people think that over-fermented foods can be a bit too pungent. Others love it (like me).

As a rule of thumb, homemade fermented hot sauce will last 2-3 months in the refrigerator. We are confident that they can last much longer, but it is always wise to be on the safe side.

Always be sure to inspect your fermented sauce for mold growth or odd smells. If you are uncertain whether anything has gone wrong, you’re probably better off discarding.

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What Is The White Stuff On My Fermentation?

There are a few things that a white substance on your ferment could be. The more common is harmless yeast that can simply be removed. The other might mean you need to discard your fermentation.

Kahm Yeast

This is very common and is harmless to your food. You can safely consume the yeast, but most choose to remove as much as they can with a clean spoon before storing the ferment in the refrigerator.

What Causes Kahm Yeast?

There are a number of factors that can cause Kahm yeast to form on your ferment, but the most common are:

• Higher temperature
• Open-air fermentation (no closed lid)
• Fermenting sweeter vegetables, like peppers or carrots

This yeast is a live fungus that is common in the atmosphere and tends to thrive in a fermentation environment.

What Does Kamh Yeast Look Like?

Kahm yeast can often be mistaken for mold, but if you use these simple identifiers, you will know when your ferment is still safe:

• Stringy, wrinkled, film-like look
• White to off-white color
• Not fuzzy, but more flat
• Bubbles of carbon dioxide often get trapped in Kahm yeast

Here is a picture of Kahm yeast.

Mold

Mold is usually a reason to discard your ferment. There are ways to salvage a moldy ferment, but I prefer to simply call it a loss and start over.

What does mold look like on a ferment?

There are many types of mold, but most exhibit these similarities:

• Fuzzy appearance rather than smooth
• Raised from the surface
• Spotty at the beginning, eventually coming together to form a layer

There are some harmless molds, but it is hard to be sure without doing your own research. If you suspect you have mold, we recommend that you get rid of the ferment.

Alternatively, you can simply skim away the top layer, careful to remove any and all visible mold. The remaining ferment should still be safe to eat.

Here is a picture of mold on a ferment.

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Other Methods Of Preserving Hot Peppers

Want another option for preserving your hot peppers? There are tons! Check out our article on the many methods of preserving peppers here. You’ll learn how to pickle peppers, freeze them and lots of other cool tricks. Never let your peppers go to waste!

We hope you enjoyed this guide to making fermented hot sauce at home. Let us know how your sauce turned out, and if you recommend any other tasty ingredients to spice things up.

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