You might be interested in this then, but it’s not for my level of investment:
Essentially you can by a share of a barrel.
Personally, I like to buy bottles, and I track their value over time. Not just the ones I buy, but the release the years before and after.
Currently I own a set of Macallan Classic Cuts. The 2023 is starting to run out in the shops but can still be had for around ÂŁ130. For reference the 2017 bottle can be had for around ÂŁ600 in auction if you are lucky.