I tried this too and it said that the stew is not finished.
I'm not sure but I think that this combination of the 3 herbs
Click to reveal..
(fresh water, an orange, yellow and white herb plus food)
suggest it's for another puzzle
Click to reveal..
look at the puzzle 11: The Great Feast
so it can't be used just like that. confused
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My Story: Aika's Memoirs in Kitten's forum