However, in late 2009 the brand was purchased by the owner of St. Germaine and was reproduced using new vendors (since the original providers had long since gone out of business as well). The outcome was a delightful liqueur, welcomed warmly back into the cocktail community, despite its more reddish hue (hence why your Blue Moon doesn't seem very blue!).
After reading this history, I just had to try it. At forty dollars a bottle, it's not an everyday kind of beverage, but I would definitely say its worth the investment. Its similar enough that you could use it in place of Chambord in a sparkling wine, but Creme Yvette's flavor profile is much richer and more complex (not to mention, almost double the proof).
Here are two ways to enjoy Creme Yvette!
How to Make a Blue Moon
How to Make a Bitter Bike
Add the St. Germaine first, then add the layer of Creme Yvette by pouring it onto the spoon, which should be held just over the St. Germaine. The idea is that the liquid is gently added, so that it doesn't plop in and start mixing. Add the bitters the same way.
(like, hmm, Mothers' Day perhaps? I think she's worth it!)