International Bartenders Association's Bloody Mary

4.5 cl vodka
9 cl tomato juice
1.5 cl lemon juice
2 to 3 dashes of Worcestershire Sauce
Tabasco
Celery salt
Pepper

Stir gently, pour all ingredients into highball glass. Garnish with celery and lemon wedge.

Note: all IBA cocktails are measured out in centilitres (cl); the conversion is roughly 3 cl to 2 ounce (oz).

[via IBA]