You'll need proper martini glasses and a proper shaker. For vodka, I strongly recommend Belvedere, Goose, Chopin or one of those more expensive brands. You _will_ taste the difference and you will like it. And one other thing: it will be tempting to use crushed ice, but I strongly suggest you make or buy ice cubes and crush them yourself with a hammer, for reasons that I hope will become obvious as you read on.

To begin: Crush some Ice and fill your martini glasses to the rim. Pour the Club Soda over the cracked ice, filling the glasses. Set aside.

Pour a couple ounces of Dry Vermouth into the shaker. Cover and swirl it around a bit. Pour out the Vermouth leaving a coating around the inside of the shaker. Lightly crush some more Ice and fill the shaker about 3/4 of the way. Pour in the ice-cold Vodka, covering the ice. Cap the shaker and shake violently. When you feel you've done it enough, do it some more. It's important that the shaking sliver the ice.

Pour the Ice and Club Soda out of the glasses. Uncap the shaker and pour the drinks.