Can I skip the fermentation and just blend with vinegar?

Yes — that gives you a vinegar hot sauce like Tabasco. It is quicker but you lose the tangy depth that fermentation adds. Blend chillies, garlic, vinegar, and salt, then simmer for 15 minutes.

How do I make it less hot?

Remove the seeds and inner membranes before fermenting. Or mix in a sweet pepper (bell pepper or banana pepper) to dilute the heat without losing volume.

How to make my own hot sauce

A fermented hot sauce is salt, chillies, and time. Lactobacillus bacteria do the work — the same process behind kimchi and sauerkraut. You end up with a tangy, complex heat that vinegar-based shelf sauces cannot touch.

This is a one-jar, one-week project. You do not need special equipment. You do need to burp the jar daily or use an airlock lid, because fermentation produces CO2 and a sealed jar can pop.

What you need

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300 g fresh chillies (cayenne, fresno, serrano, or a mix — avoid dried)
2 tablespoons non-iodised salt (sea salt or kosher salt)
3-4 cloves garlic, peeled
250 ml filtered water
A clean glass jar with a lid (500 ml-1 litre)
A blender or food processor
A fine-mesh strainer
A squeeze bottle or jar for the finished sauce
Optional: a fermentation airlock lid

Step by step

01
Wash the chillies. Remove stems but keep the seeds — that is where most of the heat lives. Slice them in half lengthwise so brine can penetrate.
02
Dissolve the salt in the filtered water to make a 3-5% brine. Stir until clear. Do not use iodised table salt — iodine inhibits fermentation.
Tip
The most common failure is not keeping chillies submerged. Anything above the brine is exposed to air and can mould. Use a weight or a bag of brine to hold them down.
03
Pack the chilli halves and garlic cloves tightly into the jar. Pour the brine over until everything is submerged. Push a smaller jar or a zip-lock bag of brine on top to keep the chillies under the liquid.
04
Close the lid loosely or fit an airlock. Place the jar on a plate (it may bubble over) in a spot out of direct sunlight, at room temperature.
05
Burp the jar once a day for 5-7 days. Open the lid briefly to release CO2. You should see small bubbles — that means it is working. If you see fuzzy mould above the brine line, skim it off; the submerged chillies are still safe.
06
After 5-7 days the brine should taste tangy, not just salty. If it still tastes flat, give it two more days. Longer ferments (up to 3 weeks) give deeper flavour.
07
Pour everything — chillies, garlic, and brine — into a blender. Blend until smooth. Add a splash of white vinegar (1-2 tablespoons) to stabilise the pH for storage.
08
Strain through a fine-mesh sieve, pressing the pulp with a spoon. The liquid is your sauce. The leftover pulp can be dried into chilli flakes.
09
Bottle the sauce. It keeps in the fridge for 3-6 months. The flavour will continue to develop slowly.

Email me the checklist

Checklist email is coming soon — use Print / save PDF for now, or check the materials list above.

Notes

The most common failure is not keeping chillies submerged. Anything above the brine is exposed to air and can mould. Use a weight or a bag of brine to hold them down.
Wear gloves when handling hot chillies. Capsaicin on fingers transfers to eyes and will remind you painfully.
If the whole jar smells putrid (not tangy or funky, but genuinely rotten), discard it. A healthy ferment smells sour and peppery.

Questions people ask

Fresno or cayenne for a classic medium heat. Habanero for serious fire. Mixing two or three types gives more complex flavour than a single variety.

Safety note: this is practical DIY guidance, not medical, chemical, or professional advice. Skip anything that feels unsafe for your setup.

Kitchen Fermentation Chillies Condiments

How to make my own hot sauce

What you need

Step by step

Email me the checklist

Notes

Questions people ask

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