How many types of barrels are used to make whisky anyway

The most common types of barrels are sherry barrels (barrels that have been used to make sherry), bourbon barrels (barrels that have been used to make bourbon), and PX barrels. They can be subdivided into fino barrels, oloroso barrels, PX barrels, etc.), bourbon barrels (barrels that have been used to make bourbon), port barrels (barrels that have been used to make port wine), wine barrels, etc... ... These are the main types of whiskey making barrels.

Nowadays, distilleries are trying to personalize their whisky by using beer casks or all sorts of strange barrels, but the results don't seem to be very good.

Let's look forward to attempts at single malt Scotch whisky aged in mash tuns!