It is a Riesling.

 

Did you have a feeling it might be a Riesling or were you completely off with your guess?

Now you know it is a Riesling, why not try the wine again and see what characteristics you might be able to pick up, which hint towards it being this grape.

So, to summarise:

This is a German Riesling. 

It comes from a region called Pfalz.

The only thing left to find out is...

Who could be the producer of this wine?