This is something I can't seem to make sense of, even after reading the ingredient lists.
The non-reduced-fat Hellman's dressing is marketed as "real mayonnaise", but reduced-fat Hellman's is sold as "mayonnaise dressing". I've also observed similar differences in labeling with other brands of mayo, such as Kraft Mayo.
Why is the reduced-fat dressing not considered "real mayonnaise", and what is the difference between these two? What defines "real mayonnaise"?