The Skinny on Dressings Dressings are often made with ingredients that are higher in fatsuch as oil and mayonnaise. This, of course, makes the dressing higher in fat. But increasingly tasty lower-fat, lower-calorie alternatives are becoming available. How is this being done? What in these dressings allows them to be low fat, but still taste good? Look into the ingredients of three popular low-fat, low- calorie dressings at your local supermarket . What are the common ingredients? How do the ingredients of low-fat dressings differ from regular dressings?