Mix the flour with water or the soup stock of bonito or konbu (a kind of kelp used for Japanese soup stock), beat it well and let it stand for about eight hours (the amount of water is the same as that for flour, as a rough indication).
小麦粉を水またはカツオ・昆布出汁でダマにならないよう溶き8時間程度寝かせる（水の分量は粉と同じ重量をおおむねの目安とする）。