Hi Frank,
You probably don't need me to say this, but it may help others.
That's because the Mandarin itself is over exposed (whites are blown) and the reflection is less so.
I was shooting one quite like this only yesterday and in the shade, with -0.5 EC, it
still blew a few pixels, but in sunshine, I find the -EC needs to be at least -1.5 stops to prevent those narrow bits of white blowing. Exactly how much obviously depends what metering mode is in use and what background it is shot against.
In the UK,
our Mandarin looks different, but oddly, so far, I haven't found a trace of what you and I both shot!
Cheers,