This versatile sauce is served with some classic Veracruzan antojitos (appetizers, snacks). It also goes well with grilled meats, chicken and fish. Since discovering it, I've taken to using it like a lighter, spicier guacamole. The chunky-textured original was made with a Mexican stone mortar and pestle. If using a food processor or blender, adjust the texture to your liking. It's good chunky, but I've also come to enjoy it puréed very smooth.
2 garlic cloves, cut in chunks
1 1/2 teaspoons salt, or to taste
1 small white onion, coarsely chopped
2 - 3 (or to taste) serrano chiles, stems removed, cut into chunks
1/2 pound tomatillos (6 - 8 average-sized tomatillos), cut into quarters
4 - 6 cilantro
1 ripe Mexican-type avocado (Hass or Fuerte)
In a food processor or blender, process the garlic and salt to a paste. Scrape down the sides if necessary with a rubber spatula; add the onion, chiles, tomatillos, and cilantro. Process with an on-off motion to make a slight chunky puree. Scoop out the avocado flesh into the machine and process to the desired smoothness. Serve within 1 hour (or preferably at once).