Where does “白湯” come from?

白湯 (Japanese) comes from Japanese 湯, from Old Japanese ゆ, from Proto-Japonic *yu — hot water.

白湯 (Japanese): plain hot, boiled water for drinking

Definitions

  1. plain hot, boiled water for drinking

Ancestry of “白湯”, step by step

白湯 traces back through two separate lines of ancestry.

via Japanese 湯

StepLanguageWordMeaning
1Japanese湯warm or hot water; bathwater; a hot spring
2Old Japaneseゆattaches to the
3Proto-Japonic*yuhot water

via Japanese 白

StepLanguageWordMeaning
1Japanese白the color white; innocence; a white go stone
2Middle Chinese白—
Every word from Proto-Japonic *yu →Every word from Old Japanese ゆ →Every word from Japanese 湯 →