A method of preparing a beverage with the steps of: a) inserting a first beverage cartridge containing one or more beverage ingredients into a beverage preparation machine; b) operating said beverage preparation machine to pass an aqueous medium through the first beverage cartridge to dispense a first portion of said beverage into a receptacle; c) inserting a second beverage cartridge containing one or more beverage ingredients into the beverage preparation machine; and d) operating the beverage preparation machine to pass an aqueous medium through the second beverage cartridge to dispense a second portion of said beverage into the receptacle; wherein one of the first or second beverage cartridges contains a liquid dairy-based ingredient.