Dirty Martini

Fill a cocktail shaker with crushed ice. Add vermouth; cover with lid, and shake until thoroughly chilled. Discard vermouth, reserving ice in shaker. Add vodka and Spanish olive brine to ice in shaker; cover with lid, and shake until thoroughly chilled (about 30 seconds). Pour into a chilled martini glass. Serve immediately with a large pimiento-stuffed Spanish olive.