Preheat the oven to 500.

Place the tomatoes, onion and garlic cloves on a baking sheet and roast for 10 min. Remove the garlic and continue roasting the tomatoes and onion for 10 min or until the tomato skins have blackened a bit. Remove the skin from the garlic after it has cooled.

In a skillet over medium heat toast the chiles until they are slightly darkened.

Transfer all of the ingredients to a blender and add the water.

Blend for about a minute and pour into serving dish. Add salt to taste.