A Bond, James Bond, Vodka Trick

Everyone knows that Agent 007 likes his martinis shaken, not stirred, and the film adaptation of Casino Royale familiarized people who hadn't read the book with Bond's Vesper Martini.

But Bond in Ian Fleming's books has another favorite cocktail trick, here in Moonraker:

M shrugged his shoulders. ‘You’ve got a head like a rock, James,’ he said. Drink as much as you like if it’s going to help. Ah, here’s the vodka.’ When M poured him three fingers from the frosted carafe Bond took a pinch of black pepper and dropped it on the surface of the vodka. The pepper slowly settled to the bottom of the glass leaving a few grains on the surface which Bond dabbed up with the tip of a finger. Then he tossed the cold liquor well to the back of his throat and put his glass, with the dregs of the pepper at the bottom, back on the table. M gave him a glance of rather ironical inquiry. ‘It’s a trick the Russians taught me that time you attached me to the Embassy in Moscow,’ apologized Bond. ‘There’s often quite a lot of fusel oil on the surface of this stuff—at least there used to be when it was badly distilled. Poisonous. In Russia, where you get a lot of bath-tub liquor, it’s an understood thing to sprinkle a little pepper in your glass. It takes the fusel oil to the bottom. I got to like the taste and now it’s a habit. But I shouldn’t have insulted the club Wolfschmidt,’ he added with a grin. M grunted. ‘So long as you don’t put pepper in Basildon’s favourite champagne,’ he said drily.
[Fleming, Ian (2008-06-03). Moonraker (pp. 47–48). Ian Fleming Publications Ltd. Kindle Edition.]

I tried this last night, and I couldn't really taste the pepper [I was using good quality pre-ground stuff.]  Freshly ground pepper would no doubt work better, and your vodka has to be ice cold, of course.  I like vodka [in small quantities] and I like pepper, so I may adopt this Bond affectation.