For 1 person
The Dry Martini is preparing in a mixture glass. Fill the glass with ice cubes at 2/3, then pour 5 centilitres of gin and 1 centiliter from Vermouth Dry. Hit with the spoon up and down for 10 seconds.
Pour the preparation into the cocktail glass by filtering the ice cubes with a colander.
Repeat the operation for each glass.
Place an olive at the bottom of the glass and serve.