Black magic

How they get the Guinness zero to taste just like the real thing. 9km walk to check on the timing of a walk with friends planned for Sunday. Picked the route to allow Diana to take a shortcut home if she's struggling to complete the whole thing. I don't think she will need to cut the walk short but she doesn't share my confidence so this is a bit of a physiological trick to get her out there. Without the option of a shortcut she wouldn't come along.