Slice the tops off each of your olives so that they are easier to stuff.
Use a mother of pearl spoon to scoop caviar out of the tin, then gently place it into the olives until they are overflowing. Skewer them on a cocktail pick and set aside.
Add ice to your martini glass and fill with water to chill. Set aside.
Add several ice cubes to a cocktail mixing glass. Add vermouth, gin, and olive brine. Stir with a bar spoon in a consistent circular motion for 30 seconds.
Discard the ice and water in your martini glass. Strain martini into the empty martini glass.
Place cocktail pick with caviar stuffed olives on top of the glass. Cheers and enjoy immediately.