IB Whisky (independent bottler)

"Distilleries also pass on barrels of whisky to ensure consistency. When blending whisky, they ensure consistency by using barrels with similar flavours. If a particular flavour is notably different, it may be deemed uncharacteristic of the distillery and as such cannot be used in "official" product bottlings."

Independent bottler select casks and bottle whiskies from distilleries, and it just provides an alternative way for us to try the those distilleries, you might hear of or not before, to find out the secret.