Add your gin (or vodka), dry vermouth, and olive brine to a cocktail shaker filled with ice.
Give the shaker a good shake for about 15 seconds and use a strainer to pour your drink into a chilled martini glass (if you don’t have a separate strainer, you can just use the strainer top of the shaker).
Add a garnish of olives on a cocktail stick and your drink is ready to go!
Notes
Tips for Making a Dirty Martini
Make sure your glass is chilled and your martini is ice cold! This is definitely a drink where temperature affects the taste, so go the extra mile to chill the glass to keep it cold.
For extra olive flavor, you can muddle olives into the drink before straining, or add extra brine for a heavier olive taste.
To make the perfect dirty martini for you, play around with the ratios of gin or vodka and vermouth until you find the sweet spot for your taste level.