1 Place lettuce, pecans and oranges in a salad bowl.2 Combine vinegar, sugar, canola oil, red onion, salt, mustard and water in a blender or food processor. Blend until dressing forms a creamy white consistency.3 Pour 1/2 of the salad dressing on the salad. Save the remainder in the refrigerator for up to three days for another salad or use as a dip.