A close up of the lemon wheel garnish at the side of a Valkyrie cocktail.
Add lots of ice to the mixing tin.
Shake the drink well until condensation forms on the outside of the mixing tin.
Fill a Rocks glass with ice.
Strain the contents of the mixing tin into the glass.
Taste the cocktail and if necessary adjust the balance with a touch of extra sugar or citrus juice.
Garnish the cocktail with a lemon slice.