"She specially liked to see him make the goat's milk cheese"

France, rather than Switzerland, is most well-known for goat's milk cheese. The famous Swiss cheeses such as Emmentaler, Gruyère, Appenzeller and Vacherin are all made from cow's milk.

French goatmilk cheeses are usually soft. In Heidi, the grandfather toasts his goat cheese which suggests it is a hard cheese. If you click on this link, you can see a picture of a rare Swiss hard goatmilk cheese from the Zuri Oberland, southeast of Zurich.