I haven't read all 100+ pages, so maybe someone already mentioned this. I made this about 10 months ago, but I recently found 10 bottles in my cellar that I had forgotten about. I liked it before, but wow! Crisp, dry and refreshing. It's also crystal clear, whereas my young graff was a bit cloudy. In general, it was just smoother than when it was young.
You may want to age a few bottles from each batch, it's worth it.