差さし湯ゆ

noun

adding hot water; topping up with hot water

Refers to the act of adding hot water to a bath or pot to adjust temperature or volume. Often used in contexts like bathhouses, cooking, or tea preparation.

• お風ふ呂ろがぬるくなったので、差さし湯ゆをした。

  The bath got lukewarm, so I added hot water.

• 差さし湯ゆをしながら、ちょうどいい温おん度どに調ちょう整せいする。

  Adjust the temperature to just right by adding hot water.