Everyone hip on Subway's sandwiches knows the key to cloning the flavor of many of the chain's top-sellers is in recreating the secret sauces. For example, Subway's Sweet Onion Chicken Teriyaki Sandwich is pretty bland without the Sweet Onion Sauce. And one of Subway's newest creations, the Chipotle Southwest Cheese Steak, is just a cheese steak sandwich without the Chipotle Southwest Sauce. Now, with this simple sauce clone, you can recreate the slightly sweet, mildly sour, and a little bit smoky sauce at home to take any of your home sandwich creations on a trip to the spicy Southwest. But you don't have to stop at sandwiches. This sauce also makes an amazing dressing for a zesty Southwestern-style salad. You'll need to pick up some ground chipotle chile in the spice section of your market. McCormick makes good stuff. Source: "Top Secret Recipes Unlocked" by Todd Wilbur.