コトコトgentle clinking, sound of rapping, sound of rattling, sound of lightly chopping, simmering noise, light bubbling, sound of cooking something on a low flame

カレーを弱火(よわび)でコトコトと煮(に)る。

Simmer the curry on low heat with a gentle bubbling sound. {gentle clinking, sound of rapping, sound of rattling, sound of lightly chopping, simmering noise, light bubbling, sound of cooking something on a low flame}

風(かぜ)で不安定(ふあんてい)な椅子(いす)がコトコトと揺(ゆ)れている。

The unstable chair is rattling due to the wind. {gentle clinking, sound of rapping, sound of rattling, sound of lightly chopping, simmering noise, light bubbling, sound of cooking something on a low flame}

豆(まめ)をコトコトと煮(に)たら、とても柔(やわ)らかくなりました。

When I simmered the beans with a gentle bubbling, they became very soft. {gentle clinking, sound of rapping, sound of rattling, sound of lightly chopping, simmering noise, light bubbling, sound of cooking something on a low flame}

弱火(よわび)で鶏肉(けいにく)をコトコトと煮(に)たらとろけるほど柔(やわ)らかくなった。

After simmering the chicken over low heat, it became so tender that it just melted. {gentle clinking, sound of rapping, sound of rattling, sound of lightly chopping, simmering noise, light bubbling, sound of cooking something on a low flame}

水車(すいしゃ)が川(かわ)の流(なが)れで回(まわ)るたびに、コトコトと小(ちい)さな音(おと)を立(た)てています。

Every time the water wheel turns with the flow of the river, it makes a gentle clinking sound. {gentle clinking, sound of rapping, sound of rattling, sound of lightly chopping, simmering noise, light bubbling, sound of cooking something on a low flame}