My bride and I did the Bourbon Trail a couple weeks ago. It was a good time. While on the tour at Makers Mark, the guide commented on the amount of White Oak casks that they (and other distillers) went through every year. I wondered if there were any issues with sustainability, as in my area QSWO has gotten stupid expensive and the story I always hear is that it's in short supply. The said their supply chain folks watch things pretty close, and based on good forestry practices over the last few decades, there are actually more White Oak trees available for harvest than there ever have been. Seems like lumber should cost less. Just saying.