Basic Salsa Verde (Mexican Tomatillo Salsa) Recipe

Combine tomatillos, serranos, and onion in a medium saucepan and cover with water. Bring to a boil over high heat then reduce to a simmer. Simmer until vegetables are completely softened, about 10 minutes, stirring occasionally to make sure all sides are softened. Drain vegetables then transfer to a blender. Add cilantro and a large pinch of salt. Blend on medium speed until a chunky puree is formed, about 30 seconds. Transfer to a bowl, season to taste with more salt or lime juice if necessary, and serve. Cooled salsa can be stored in a sealed container in the refrigerator for up to 2 weeks.