Place the tomatillos, onion, garlic, cilantro, lime juice, and chiles in a blender and blend until smooth. If you have a small blender or not a very powerful blender, you can do this in batches.
Season with salt, to taste. Store in an airtight container in the refrigerator for up to 1 week.
Notes
Recipe from The Haven's Kitchen Cooking School by Alison CayneIf you prefer roasted salsa verde, you can roast the tomatillos before blending. See the post for instructions. Makes about 3 cups of salsa