The ones I get is not the result of failed cooking, because I don't have anything stored in the vaults to begin with or ever saw a cooking animation before they get 'the food', plus they often walk with the plate from afar and 'from afar' means not the cooking place. What I do have though is abundance of witch cauldrons all of my girls use all the time because they have darkness type of desires and provide me with dozens of dark spirits which I don't have to craft.
Darkness is not related to hatred towards protagonist, it's mostly dominance/evilness type of thing and can be obtained without mistreating girls or causing them to avoid you, in fact it actually makes them express their affection in 'more obvious and undeniable' way than all other stat driven behaviors, vigilance on the other hand is what actually represents girls dissatisfaction with protagonist actions such as molesting or assaulting them and what makes them avoid you.
'Transformation' is a machine translation for 'hentai' which by no means should be translated in such way in such a game. I don't think I should explain what word 'hentai' stands for in this game.
Now I have never seen this cauldron you speak of... ergo, I have no idea what you are talking about... How high is your girl's darkness ratings? I have seen the girl's come walking up with a plate, but just assumed that it was due to there being a picnic/dining table or whatever near me. They can cook at any cooking location and if I have been stationary they will soon congregate around. I assume this to be the same for everyone... However, I have never seen a cauldron and they haven't produced dark matter in a long time. Can you share a picture of a cauldron?
ROFL! Androids starting a witches coven!!! LOL!
Darkness is not solely responsible for hatred towards the protagonist but the "Hatred" H-positions are unlocked with a high vigilance, high darkness, and low trust.
I never said that evil characters don't show love, however, if they have a high social and high darkness they will fatigue normal girls to the point of passing out simply through conversation.
So, on the character status card in the phone, the first character trait on the right (top) says hentai? And the growth of the girl is based on her hentai? ROFL! That is actually funny...
Ah, but Romaji Hentai
変態
Means "metamorphosis, or transformation." Ergo, I believe it is actually a joke as a play on words... Because as the girls learn, grow, and become more self-aware, their "transformation" experience increases. I mean, if she begins to understand the world around her, or learn to cook, or catches a butterfly... How could that mean, "you pervert" experience.
Ergo, I assume that the meaning is not what you think but ironic intentional use of the word...