I just had to chime in. I don't have nearly the breadth or depth of knowledge in vino that I do in bier, but is it possible to have a white Shiraz/Syrah (same thing)? I've only seen them red.

The white wine you liked so much is probably Gewurtzraminer. It's a really accessible white for the neophyte, excepting the pronunciation of the name. Kinda like Merlot is for reds.

Funny anecdote: an older friend and I were discussing wine the other day when I mentioned that you know you're growing up when the Merlot in your rack has all been replaced by Zins.