Harry Potter in German. Why, we wonder, does J.K. Rowling use her full name here?

In Switzerland, we buy orange juice unrefrigerated in boxes. This is mostly posted here for our children, who know how we say orangensaft at home.
And real Appenzeller milk. It comes from the most beautiful cows in the world. Bill took this picture because it’s funny to go around taking pictures of things like orange juice and milk, and because the label on this milk bottle is oh-so-very-Swiss. 