The following link will take you to an English article about a shop in Yamato that, according to the author, makes great Swiss rolls – called “roll cake” (ロールケーキ) in Japanese:
https://www.facebook.com/kumanago.en/posts/613184575479452
Here’s a link to a Google map showing the location:
The shop is very near Tsujunkyo Bridge so after seeing the bridge (actually, it’s an aqueduct) and nearby Gorogataki falls you might want to pick up some cake to bring back as a little omiyage (souvenir).
By the way, if you interested in visiting the Tsujunkyo area, be sure to check out the NHK video that I posted about the other day:
