Chill the glass: Chill the martini glass to get it really cold.
Add gin: Pour 3 oz of Plymouth gin into the chilled glass.
Garnish: Garnish with a slice of lemon peel.
Serve: Serve as is for an extra super duper dry martini, following Churchill's preference to not include vermouth but rather to look at an unopened bottle of vermouth while sipping the martini.