Fritz Maurer came to Bhutan from Switzerland more than 40 years ago to make cheese.
"But there was one big problem," says Fritz, "There was no milk."
There's milk now. Fritz is standing in front of a floor-to-ceiling rack full of orange rounds of Emmental cheese. In the next door cold-store, shelves of gouda and gruyere are maturing.
Fritz, a newly qualified cheesemaker back then, had come to Bhutan after answering an advertisement in a Swiss newspaper for a cheese-maker for the Himalayan kingdom.
When he discovered there was no surplus milk he resolved to use his return ticket and fly home. He thinks the ticket is still somewhere in his house in the Bumthang district of Central Bhutan.