If you want a tangy salsa then try this fermented salsa verde. It's a quick and easy recipe made with fresh tomatillos, garlic, onions, seasoning, cilantro, and a kick of jalapenos.
Place all ingredents into a food processor. Process for 1-2 minutes until salsa is smooth.
Place in a glass quart jar.
Press the salsa down in the jar so the veggies are fully submerged in the juice/brine.
Seal tightly with a fermenting lid.
Allow to ferment for 4 days on the counter in a cool dark area.
At this point, you may eat the salsa or store it in the refrigerator. Keep the salsa in the refrigerator for up to 3 months. I like to use a piece of washi tape on the lid and write the use by date.
Notes
Use a good quality fermentation lid with my canning jars like these Smart Lids which allow the carbon dioxide to safely leave the jar without needing to open the lid.
Look for the bubbles. Tiny bubbles should appear at the surface of your salsa while it ferments. It’s a good sign that the beneficial bacteria are doing their job.
Look for color changes. As the salsa ferments, it will become more acidic, and this may cause it to change color from vivid green to a dull green.
Don't skimp on the salt. Adding salt to the salsa helps keep mold and other microbes that can cause spoilage at away, allowing beneficial bacteria to grow.