Possibly stupid question about ice, shaking, dilution, and volume of liquid

[Hassouni]

finished drink

[KD1191]

To throw a log on the fire: the conventional 25% dilution tastes way too hot/sour/sweet to my palate these days. At Marvel we usually dilute 50% minimum; some shaken drinks are diluted as much as 80-90%. In other words a 90ml cocktail would measure just shy of 170ml after shaking.

 

Most things benefit from the addition of water. Exactly how much is personal preference. 

 

As a consumer, what is the impact, here? Am I getting a larger drink with the same amount of spirit? Or, a typically-sized cocktail with less alcohol?