It was a handpainted sign on a wooden barn that piqued my interest in Gruyères. I was travelling from Emmental to Montreux last year, following the wonderful Golden Pass rail route. Our train paused at Montbovon, the start of a steep climb up to the line’s final dramatic mountain pass. There was the prospect of stunning views of Lake Geneva ahead. To the right of the railway, I spotted the bold sign: “La Gruyère vous salue” (the region, like the cheese, lacks the village’s final “s”).