Ninfa's Red Hot Sauce

Preheat oven to 400 degrees. Place cored whole tomatoes and whole jalapenos in a shallow pan (a cookie sheet with sides), in a single layer, and roast for 30 minutes until tomatoes and jalapenos are charred (they will be black, but that is what takes away the acidity and gives the roasted flavor; you don't have to turn them). While tomatoes and jalapenos are roasting, saute the onion in hot oil (vegetable or olive oil) until transparent and let cool. After tomatoes and jalapenos are roasted, place all ingredients in a blender (leaving tomatoes and jalapenos whole) and blend for about 15 seconds, taking care not to overblend or the mixture will be too watery (you may have to do this in several batches). You can also vary the amount of jalapenos or garlic to your taste.