Did you notice any of the cumin aroma? I guess the amounts are so small that it blends in nicely. Are you sure cumin is the third and "secret" spice, though? I've heard Michael Jackson talking about it maybe being caraway seeds. That's from an old book though...
Primary: Ordinary Bitter
Secondary: Centennial IPA
Coming up: Beamish style Dry stout, Hefeweizen, Dark Mild