Fill your mixing glass with ice to the top and stir to bring the mixing vessel to a good temperature.
Discard any water that has been created in the mixing vessel and then add your whiskey, sweet vermouth and bitters.
Stir for up to 45 seconds to reach optimum dilution
Using your julep strainer to hold the ice in place. strain into a chilled glass
garnish with a maraschino cherry and serve!