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VEG FERMENT

Fermented Tomato Salsa

Fermented tomato salsa is a lively, tangy, and probiotic-packed twist on the classic Mexican favorite.

Fermented VeggiesGluten-FreeNo Added SugarNo OilVegan
Fermented Tomato Salsa
PREP
20 min
🫙
FERMENT
3–5 days
TOTAL
3–5 days
🍽
YIELD
Makes ~1 L
📊
DIFFICULTY
Easy
🌍
CUISINE
Mexican/Fusion

Ingredients

Everything you need.
  • 8 medium tomatoes, cubed
  • 4 small onions, finely chopped
  • 8 green chilies, chopped
  • 12 garlic cloves, chopped
  • 2 bunches coriander leaves, chopped
  • 2 tsp dried oregano
  • Juice of 2 lemons
  • 100 ml filtered water (½ cup)
  • 30 g sea salt (1½ tbsp)

Method

Step-by-step.
  1. Prepare the Ingredients. Wash all the vegetables thoroughly. Chop tomatoes, onions, chilies, garlic, and coriander leaves.
  2. Mix the Salsa. In a large bowl, combine the tomatoes, onions, chilies, garlic, coriander, oregano, lemon juice, and sea salt. Mix thoroughly to release some natural juices.
  3. Pack the Jar. Transfer the mixture into a clean 1L fermentation jar, pressing down firmly to remove air pockets. Place a glass weight on top to keep everything submerged. Add the filtered water and mix gently so the liquid rises above the vegetables. Leave at least 2 inches of headspace in the jar to allow gases to expand during fermentation.
  4. Seal with an Airlock. Close the jar with a grommet lid. Fill the airlock halfway with water so gases can escape while keeping contaminants out.
  5. Ferment. Place the jar at room temperature (around 25–30°C / 77–86°F) for 2 days.
  6. Check Daily. Press down gently to ensure all ingredients stay submerged. Begin tasting from Day 2 — it should taste bright, tangy, and slightly effervescent.
  7. Store and Enjoy. Once it reaches your preferred sourness, remove the glass weight and airlock, seal with a storage lid, and refrigerate. Fermented salsa keeps well for up to 1 year.

Watch the walkthrough

Full method on YouTube.
Recipe video

Notes & variations

Tweaks, swaps, what we've learned.
  • Consistency: Stir gently before serving — natural separation is normal.
  • Headspace: Leave 2 inches for bubbling gases.
  • Airlock Lid: Prevents oxidation and preserves freshness.
  • Spice Level: Adjust chilies to taste; fermentation can slightly mellow their heat.
  • Storage: Refrigerated salsa becomes richer in flavor over time.
  • Fresh, tangy, and alive — fermented tomato salsa is the perfect mix of spice and probiotics. It brings a healthy kick to any meal and showcases how fermentation can transform everyday ingredients into something extraordinary!
MAKE THIS RECIPE
Get the kit that does the work for you.
Pre-measured spice mix, the right jar, an airlock, glass weight, and a recipe book that includes this one. No guessing.
Vegetable Fermentation Kit
Vegetable Fermentation Kit
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