For that reason, preferences for particular manufacturers such as 'soy-sauce other than that of Higashimaru Shoyu Co., Ltd. is not used' are seen in some restaurants in the Kanto region as well as restaurants in the Kansai region.
そのせいか関西は元より関東の料理屋でも「淡口醤油はヒガシマル以外は使わない」など特定のメーカーへ拘る所がある。