This fermented hot sauce recipe is a delicious and simple hot sauce with a complexity of flavors and beneficial probiotics. Spicy and tangy, this recipe will give any dish a nice kick of heat.

fermented hot sauce in a glass bottle with a swing top lid. A baking dish with hash in the background

We are no strangers to spicy foods. We absolutely love adding fermented jalapeรฑos to sourdough pizza with a hint of sweetness from some date paste.

Or topping tacos with some fermented salsa (I make a spicier version for Luke and I). Yum!

If you want a real kick of delicious and spicy flavor, you need to make this fermented hot sauce.

There is a flavor complexity that is much more interesting (and delicious) than the non-fermented version. 

Fermenting the hot peppers in a salt brine creates beneficial bacteria and yeast that adds a delightful tang to the peppers.

Add this delicious and healthy sauce to your favorite dishes. From eggs to avocado toast, fajitas, white chicken chili, pizza, pumpkin sheet pan nachos, your favorite Asian-inspired dishes, chili, and so much more.

fermented hot sauce in a glass bottle with a swing top lid

Tips:

  • Itโ€™s important to keep the peppers submerged in the brine. The easiest way to do this is by using fermentation weights or add water to a plastic storage bag and place it inside the jar.
  • Use non-iodized salt when fermenting. Peppers do better with a 3% brine rather than the typical 2% brine, because peppers are more prone to mold growth.
  • For ferments, you will want to use filtered or distilled water. I always use my Berkey water filter. This is because city tap water often contains chlorine which can kill the beneficial bacteria.
  • I use a kitchen scale for fermenting vegetables, because it takes out so much of the guesswork and cuts down on food waste from ferments that go south.
  • If you choose really hot peppers, be sure not to touch your eyes and consider wearing gloves.
two jars of fermented peppers

Frequently Asked Questions

Why do you ferment hot sauce?

Ferments are full of beneficial bacteria and yeasts. Not only that, but the fermentation process adds another level of flavor complexity.ย 

Is fermented hot sauce better?

It is better on a few different levels. It has more tang and flavor than the non-fermented versions, and it’s also better for your health, since it contains gut-healthy probiotics.

Does hot sauce get hotter with age?

No. The spiciness will actually mellow out with age, while other flavors will become more complex.

How long does fermented hot sauce last?

This will last up to 12 months in the refrigerator. Before using, look for any signs of mold. It should have good color and not have any off-putting smells. If in doubt, toss it out.

Do you need to cook fermented hot sauce?

No. Cooking will destroy all the beneficial bacteria and yeast. Some recipes recommend it, but then you are destroying the part you were waiting for!

Does fermented hot sauce need to be refrigerated?

Yes. After the fermentation process has happened, you want to slow it down by storing it in the fridge. Ferments that go too long are not very tasty and can mold.

There is a white film at the top of my ferment. What is it?

Something called Kahm yeast may appear at the top of your ferment. It looks like a white film and it is typical in vegetable ferments. If the brine is cloudy thatโ€™s totally normal.

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Tools You May Need:

Mason jars

Kitchen scale

Fermentation weights

Pickle Pipes – I love these.

Blender

Knife

Cutting board

close up picture of fermented peppers in a jar to make fermented hot sauce

How To Ferment Peppers

Choose which peppers youโ€™d like to ferment. I chose a combination of anaheim peppers and โ€˜yellow hotโ€™ peppers.

  • Fresno chili peppers are very popular for hot sauce and have a beautiful red colour.ย 
  • Jalapenos are another great choice.ย 

Prepare the peppers for fermenting: remove stems, slice in half, remove seeds if you wish.

  • The heat in chilies is found primarily in the ribs, not the seeds.ย 
  • You may want to remove the ribs, as well, if you want a milder hot sauce.

You will need 3% salt brine to have a successful fermentation when fermenting peppers. 

Using a kitchen scale, weigh your peppers and distilled water (minus the weight of the jar) to determine how many grams of salt you need. Example: If the peppers and water combined weigh 900 grams, then youโ€™ll need to
add 27 grams of salt. (900 x .03 = 27).

Usually, I use about 4 tablespoons of salt per 1/2 gallon of water. Heat up about 2 cups of water until warm and stir in salt to dissolve. 

Add salt water mixture to remaining water and then pour over the peppers in the mason jar, making sure to leave some head room. 

Add a fermentation weight and ensure the peppers are below the brine.

Seal the jar loosely, because the contents will bubble and the air bubbles will need to escape. 

Taste your ferment after three days to see how itโ€™s progressing. I fermented my last batch of peppers for five days. Depending on the temperature of your house, it may take anywhere from three to seven days.

fermented hot sauce in a swing top jar with sweet potato hash with topped with eggs in the background

How To Make Fermented Hot Sauce:

Strain off the liquid from the fermented peppers and reserve in another container. 

Roughly chop peppers and combine in a blender with brine from your ferment, plus vinegar, sugar, and oil. 

Purรฉe in a blender until very smooth, and then taste and adjust salt if necessary. 

This is your opportunity to get creative and add other flavours, such as ginger, garlic, lemon, etc. 

Find More Fermented Foods And Drinks:

If you make this recipe and love it, I would love if you gave it 5 stars! Tag me on Instagram @farmhouseonboone with your delicious creation.

Fermented Hot Sauce

4.63 from 8 votes
A delicious and simple hot sauce with a complexity of flavors and beneficial probiotics. Spicy and tangy, this recipe will give any dish a kick of heat.
Prep: 10 minutes
Additional Time: 5 days
Total: 5 days 10 minutes
Servings: 12
fermented hot sauce in a glass bottle with a swing top lid. A baking dish with hash in the background
Save this recipe!
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Ingredients 

Fermented Peppers

  • Hot peppers – Anaheim, Fresno, jalapeรฑo, or a combination
  • Salt
  • Filtered or distilled water

Hot Sauce Ingredients

  • 400 grams fermented hot peppers, approx 4 cups of roughly chopped pepper
  • 3-4 tablespoons saved ferment brine **less is more, so that the final product is not too watery
  • 2 tablespoons white vinegar or apple cider vinegar
  • 1-2 teaspoon organic cane sugar
  • 4 tablespoons neutral tasting oil
  • Salt to taste

Instructions 

Ferment The Peppers

  • Choose which peppers youโ€™d like to ferment. I chose a combination of anaheim peppers and โ€˜yellow hotโ€™ peppers. Fresno and jalapeรฑo are another great choice.
  • Remove stems, slice in half, remove seeds if you wish.Remove the ribs and seeds if you want a milder hot sauce.
  • You will need 3% salt brine to have a successful fermentation when fermenting peppers.

    Using a kitchen scale, weigh your peppers and filtered water (minus the weight of the jar) to determine how many grams of salt you need. Example: If the peppers and water combined weigh 900 grams, then youโ€™ll need to add 27 grams of salt. (900 x .03 = 27)
  • Usually, I use about 4 tablespoons of salt per 1/2 gallon of water. Heat up about 2 cups of water until warm, and stir in salt to dissolve.

    Add salt water mixture to remaining water and then pour over the peppers in the mason jar making sure to leave some head room.

    Add a fermentation weight and ensure the peppers are below the brine.
  • Seal the jar loosely or use a pickle pipe, to accommodate for bubbles during fermentation.

    Taste your ferment after three days to see how itโ€™s progressing. Depending on the temperature of your house, it may take anywhere from three to seven days.

How To Make Fermented Hot Sauce:

  • Strain off the liquid from the fermented peppers and reserve in another container. Roughly chop peppers and combine in a blender with brine from your ferment, vinegar, sugar, and oil. Purรฉe in a blender until very smooth, and then taste and adjust salt if necessary. This is your opportunity to get creative and add other flavours, such as ginger, garlic, lemon, etc.

Notes

Suggestions for various add ins:

  • 1 tsp of lemon juice and zest from half a lemon
  • Roasted garlic
  • Garlic and/or onion powder
  • Ginger
  • Pink peppercorns
  • Xanthan gum if you desire a thicker hot sauce

Nutrition

Calories: 56kcal | Carbohydrates: 3g | Protein: 1g | Fat: 5g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Sodium: 3mg | Potassium: 107mg | Fiber: 1g | Sugar: 2g | Vitamin A: 317IU | Vitamin C: 48mg | Calcium: 5mg | Iron: 0.3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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4.63 from 8 votes (8 ratings without comment)

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9 Comments

  1. Hรฉlรจne says:

    What are some names of โ€œyellow hotโ€ peppers?
    How much xanthan gum did u add to get the jar of yellow sauce pictured in the swing top bottle?

  2. Christine says:

    I have quite a few chili peppers. Does it make sense to ferment in one huge jar, blend, then separate the sauce into smaller jars? How would you store so much sauce? Fridge? Shelf? Canning? I’m brand new to fermentation ๐Ÿ˜›

  3. Rita says:

    This is day 5 ,used Himalayan salt

  4. Rita says:

    Made the fermented peppers , but peppers have a bit of white stuff on them . Is that normal, or have I messed up

  5. Polica McCauley says:

    I’m going to try to make this fermented hot sauce! Sounds delicious and nutritious ๐Ÿ™Œ

  6. Bernice Fullilove says:

    Thank you for all the information on fermenting peppers, it a big help with a great understanding and picture work also. I enjoy your emails and keep up the great work and stay cool.

    1. Lisa says:

      you’re so welcome! I’m so glad that my content is helpful to you