Pour half the Pale Ale into a beer glass fairly quickly. You want it to get a good head on it. Then open the Guinness. Hold a spoon over the top of the glass and turn the spoon over so it is convex. Slowly pour the Guinness over the back of the spoon and let it dribble into the glass. This will facilitate the dark beer staying on top. Pour slowly until the glass is full. Repeat the process for the second beer.