The saturated fat content of a food may be reduced by reducing the total fat content, reducing the saturated fat component of the oil phase, or a combination of both. Most foods that contain oils and fats are emulsions, so it follows that emulsion technology can have an important role in maintaining the product quality while these changes to the oil phase are made. This chapter examines a number of technologies that may be applied to emulsified foods for the reduction of saturated fat. These include the use of fat replacement ingredients, changes to the composition and properties of the oil phase, different methods for the formation of emulsions, manipulation of the aqueous phase behaviour, and use of the intrinsic instability of emulsified oil droplets.