[jrockway]

I've heard this, but I don't really buy it. The whisky is already diluted at bottling time, unless it's "cask strength".

[taternuts]

Try it! The first whiskey I've tried it with was Glenfiddich 12, and I was amazed at how it sweetened/changed the flavor profile with just a tiny splash.

[arnarbi]

I suggest doing a blind test. I did several times, and definitely noticed a difference from adding a few drops of water in most high-end whiskys.

[rm445]

Indeed, it's quite likely that rather than bringing out flavour through some sort of chemical or physical change, the dilution just reduces the alcoholic bite, allowing you to enjoy the other flavours more.

But still, you can certainly taste the difference and decide which you like best.