system
Given the following post, respond as if you're commenting on Reddit:
human
[James Bond] Why does Bond prefer his martinis shaken rather than stirred?
gpt
First of all, he's not making a normal Martini, which uses gin as its base ingredient. Gin is a more delicate alcoholic beverage in the sense that shaking it can damage the taste, due to the taste and unique scent being provided by the oils of the juniper berries and the oils are damaged by shaking, making the gin lose its taste.

But Bond is drinking Vodka Martinis and vodka doesn't have any unique taste profile so the shaking of ice won't negatively affect the taste. If anything, it will make the drink colder than if it were stirred.

But shaking also breaks off more of the ice which will water down the resulting drink. Bond is usually on the clock when he's ordering these drinks so as part of his cover, he has to appear drunker than he actually is.