Now gradually add fire...
*bwomf*

*steamy*
If it starts to boil I'll have to adjust the flame down...

Next is...

[Okoso grass <C rank>]
[Ekese grass <D rank>]
[Ukusu grass <A rank>]
[Ikishi grass <B rank>]
[Akasa grass <C rank>]
The various medicinal herbs!