Blend = Guinness Draught & Harp Lager Fill the glass half way with Harp Lager. Then rest a spoon on top of the glass and slowly pour Guinness on top of the spoon. This will help keep the Guinness on top, giving it the iconic Half & Half appearance.
Vigorously (so it develops a good head) pour half a bottle of Harp into each of the two 12-ounce or larger glasses. Slowly add the Guinness, pouring it over the back of a spoon held at an angle into the glass. The light and dark beers will stay separated for some time.