Put all ingredients into a pot. Add about 2 cups of water or enough to partially cover the jalapenos and onions. Cook on medium and cover. The jalapenos are simmering nicely. Cover and simmer about 30-45 minutes until they are soft. When done cooking, drain the water and save the boiled jalapenos, onions, garlic and cilantro. Place in a food processor and puree. This is what the green sauce should look like when you are finished. Add about 1/2-1 teaspoon salt or to taste and blend one more time. Ahhh, the finished product. This sauce is delicious as a dipping salsa for plantain chips, or as a condiment to serve over eggs or meat. But for our purposes, we will use it in our Tex Mex Green Chicken recipe.