TO ROAST JALAPENOS:Place on cookie sheet that has been sprayed with nonstick cooking spray and place under broiler, turning so all sides are blistered and black. Remove from oven and place in paper bag or wrap in dish towel for 10 minutes, This will "sweat" the skin, so it is easily removed. Once skin is removed, rinse under cold water, then remove stems and open on remove seeds and white membrane. Removing the seeds and membrane from the peppers cuts the "heat" in the soup *Important Note: Wear rubber gloves when handling the peppers and do not touch eyes or face. When you are finished with peppers, wash hands thoroughly with soap and water.
In a med/hot stock pot saute garlic and onions until translucent.
Combine all ingredients except salt/pepper and cornstarch mixture.
Simmer 20 minutes.
Slowly whisk in cornstarch mixture until desired thickness. You may not need all of it.