Slowly saute the tomatillos, the onion, and the jalapenos in a preheated frying pan with some olive oil for 5 minutes.
After 5 minutes, add the garlic cloves and continue cooking until the tomatillos are slightly browned.
Remove from the heat and blend the ingredients with the cilantro and salt in a blender.
If you want a thinner consistency, add a small amount of water.