By Lenn Thompson, Executive Editor Why isn't there more traditionally made sparkling wine in the Finger Lakes? Yes, I know it's more expensive to make than many wines. Yes, I know that it requires a serious investment time-wise. And yes, I know that the prices wineries need to charge for methode champenoise wines may be higher than some are willing to spend. But when done well, Finger Lakes sparkling wine shows so much potential. Take Lamoreaux Landing Wine Cellars 2006 Blanc de Blanc ($25) for example. They don't make it often — the last one was from the 2001 vintage…