By Kirk Miller Starting this Friday, Japanese whisky enthusiasts are in for a visual and delectable treat: The rare whisky retailer dekantā is offering up 40 sets of Japanese single malt from the legendary Karuizawa distillery in a striking new bottling called The Kurage Collection. Why get excited? Besides being a tiny producer which stopped production in 2000 (upping its collectible value), Karuizawa was a premium brand and their whisky is considered an excellent investment that — like any good spirit — gets better with age. And there’s really not much left. According to the retailer, these …