Drop the garlic through the feed tube of a food processor with the metal blade in place and motor running to chop finely (about 10 seconds.) Add the scallions, parsley, cilantro, and jalapeno and chop finely (about 6 pulses of the motor).
Add the tomatillos and salt and process until pureed, about 5 seconds.
May be served warm In medium saucepan over medium heat, heat 2 tablespoon olive oil.
Add tomatillo mixture and simmer for 10 to 12 minutes, stirring frequently, until thickened.