Later, people started to flavor senbei with soy sauce which was produced in an area alongside the Tone-gawa River (Noda City, Chiba Prefecture), and this indeed seems to be the origin of today's Soka-senbei.発音を聞く 例文帳に追加

その後、利根川沿岸（千葉県野田市）で生産された醤油で味をつけるようになり、現在の草加煎餅の原型となった、というのが実際のところのようである。 - Wikipedia日英京都関連文書対訳コーパス

There is a well known story of a time much closer to the present in which 'senbei' is derived from an incident in which an old woman named 'Osen', who was running a dumpling shop in Soka-juku (present Soka City), the second relay station from Nihonbashi, Edo on the Nikko-kaido Road, started to make and sell a different form of dumpling taking advice she received one day from a samurai who told her, 'How about making those dumplings flat and grilling them?'発音を聞く 例文帳に追加

もっと現在に近いものでは、日光街道の2番目の宿場町だった草加宿（現在の草加市）で団子屋を営んでいた「おせん」という老婆が、ある日、侍に「団子を平らにして焼いたらどうか」と言われて始めたのが名前の由来、というよく知られた挿話がある。 - Wikipedia日英京都関連文書対訳コーパス