However, since the 1970s, in order to control and protect the sherry industry, the way of trade using wooden barrels as a vehicle has been consciously changed. Until 1986, just like the protection of Scotch whisky for producing areas today, the Spanish authorities also implemented regulations for the production of "Sherry" (Jerez / Xérès / Sherry), including geographical restrictions on production and bottling . In other words, the "Sherry Cask" has hardly continued to be a by-product of the sherry trade since then.
In response to the implementation job email list of such regulations, coupled with the vigorous development of the whisky industry, the shortage of sherry casks has become increasingly evident. Whiskey distilleries, which already see sherry casks as an everyday industry, certainly don’t want to sit still, so since the 1980s, they have been eager to find alternatives.
Or, to be more precise, look for alternatives that can reproduce or simulate the effect of "young sherry aged sherry for varying periods of time" while considering cost-effectiveness.