Scotch whisky whisky used. An age statement on the bottle, in the form of a number, must reflect the age of the youngest whisky used to produce that product. A whisky with an age statement is known as guaranteed age whisky. Scotch whisky without an age statement may, by law, be as young as three years old. In the early 21st century, such "No age statement" whiskies became more common, as distilleries responded to the depletion of aged stocks caused by improved sales. Labels may also carry various declarations of filtration techniques or final maturation processes. A Scotch whisky labelled as "natural"
Laphroaig distillery distillery identifies Charles by his title of Duke of Rothesay, as he is recognised in Scotland. The 15-year-old was reportedly the prince's favourite Scotch whisky. Laphroaig calls itself "the most richly flavoured of all Scotch whiskies", and is most frequently aged to 10 years, although the 15-year-old variety is common (the 27-, 30- and 40-year-olds are rare and expensive; the 18-year-old was discontinued in late 2015). The whisky has a peaty/smoky flavour. The "Laphroaig Quarter Cask" was introduced in 2004. This expression is aged in smaller casks and is not chill filtered. Due to the smaller barrels used, the oak