In the making of The Balvenie IslayCask, David Stewart selected Balvenie single malt which had matured in traditional oak casks for at least 17 years and transferred it into 94 casks which had previously held Islay single malt. After six months he felt the casks had imparted the desired delicate amount of peaty notes, typical of Islay, whilst retaining the distinctively honeyed character of The Balvenie. The Balvenie IslayCask was bottled in 2001 and the late Michael Jackson, world renowned whisky expert and author of The Malt Whisky Companion, wrote the following about it:

Distillery Balvenie

Bottler Distillery Bottling

Bottling serie Islay Cask

Bottled 2003

Stated Age 17 years old

Cask Type Oak Casks + Islay Casks Matured

Strength 43.0 %

Vol.Size 700 ml