Fermented Chili Paste
Fermented chili paste relies on a simple salt-to-chili ratio to create a controlled environment where lactic acid bacteria thrive. By grinding fresh chilis with salt and allowing them to sit in a jar, you convert raw, grassy heat into a complex, tangy condiment that deepens in character over weeks.
Patience dictates the flavor profile.
The fermentation process creates pressure and acid; ensure your jar has a way to vent or monitor it closely for the first few days.
- Glass jar with a tight-fitting lid
- Food processor or mortar and pestle
- Digital scale
- Fermentation weight or small glass insert
What goes in.
- 1 lbFresh red chili peppers (Fresno, serrano, or habanero)
- 3 tbspCoarse sea salt (non-iodized)
- 3 clovesGarlic, peeled
Crushing for Liquid
The goal is to draw enough moisture out of the chilis to create a self-brine. Mash the chilis until they release their own juice, ensuring no air pockets remain when packed into the jar.
The method.
Prep the peppers
Remove the stems but keep the seeds. If you prefer less heat, remove the inner membranes with a paring knife.
Grind
Combine chilis, garlic, and salt in a processor. Pulse until you reach a coarse, wet mash. Do not over-process into a thin liquid.
Pack the jar
Press the mash into the jar, leaving at least two inches of headspace at the top. The paste should be completely submerged in its own liquid.
Weight down
Place a fermentation weight on top to keep the solids beneath the liquid line. Close the lid loosely.
Ferment
Store in a cool, dark place for 14 to 21 days. Open the jar every few days to release built-up gas and check that the mash remains submerged.
When it doesn't go to plan.
Use non-iodized salt, as iodine can sometimes inhibit the growth of beneficial bacteria.
If you see white sediment at the bottom of the jar, that is likely dead yeast cells—it is a normal sign of active fermentation.
The paste is ready when it smells sharp, slightly sour, and the color has mellowed from bright red to a deeper, muted tone.
The ones that keep coming up.
How do I know if the ferment has gone bad?
Look for fuzzy mold on the surface or a smell of rotting vegetation. If you see either, discard the batch immediately.
Can I speed up the process?
Warmer room temperatures will increase the speed of fermentation, but it often results in a less complex flavor. Stability is better achieved through time.
How real cooks make it.
No one’s shared their version yet. Be the first to put your kitchen on the map.
Cook this your way?
Share your version — your steps, your story. We’ll feature it right here.
Add your recipe