Fermented Salsa

Fermented Salsa

Fresh salsa that lasts for weeks and gets better with time. The fermentation mellows the raw onion, deepens the tomato flavor, and adds a tangy complexity you can't get any other way.

Time: 2-3 days  ·  Yield: About 1 quart

Ingredients

  • 6 medium ripe tomatoes (about 2 lbs), diced
  • 1 medium white onion, finely diced
  • 2 jalapeño peppers, seeded and finely diced (leave seeds for more heat)
  • 4 cloves garlic, minced
  • 1 large bunch cilantro, roughly chopped (about 1 cup)
  • Juice of 2 limes
  • 1 tablespoon fine sea salt
  • 1 teaspoon ground cumin

Method

  1. Combine all ingredients in a large bowl. Stir well.
  2. Let sit for 10 minutes, then stir again. The salt will start drawing juice from the tomatoes.
  3. Transfer to a quart jar, pressing down so the juices rise above the solids. If there isn't enough liquid, add a splash of brine (1 teaspoon salt dissolved in 1 cup water) to just cover.
  4. Place a weight or small jar on top to keep the salsa submerged. Seal loosely.
  5. Leave at room temperature for 2-3 days. You'll see bubbles forming — that's active fermentation. Taste at day 2.
  6. When the flavor is tangy and the raw edge of the onion has mellowed, transfer to the fridge.
Note: Use the ripest tomatoes you can find — flavor matters here. This salsa is best consumed within 3-4 weeks. The texture softens over time, which is fine for cooking but less ideal for dipping. Make it fresh often. For a roasted salsa variation, char the tomatoes and jalapeños under the broiler before dicing.

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