I’m wondering if part of what makes Kaneki/Sasaki so appealing to ghouls is that fact that, due to having a female’s kakukou, he smells gender ambiguous.
Every ghoul that has commented on Juuzo’s scent has found him delicious. However, due to his castration, he never developed gender characteristics. So, Suzuya is also gender ambiguous.
Tsukiyama had no interest in Kurona & Nashiro, despite them receiving the same kakuhou as Kaneki. (He even insults their scent/taste). But they’re women who received female kakuhou.
Seidou commented that he’s never tasted anything like Sasaki. Yet it seems likely that he should have tasted One-Eyed Ghouls - even if it’s just himself. But I think conditions were hash enough he’s probably been fed Kanou’s ‘failures’ or fought other OEG. However, all the CCG Investigators Tatara took for Kanou were male, and Yoshimura is male too.
Which leads us to Tooru, the other BLITZ tasty OEG (Quinx). Mutsuki requested to the Quinx recruiters to be treated as male. It’s possible that Mutsuki has a male’s kakuhou, thus also smells gender ambiguous. (It would also explain Torso’s reaction better. I don’t think it’s that Mutsuki was speaking masculine and wearing pants that led to Torso’s confusion, it’s more likely to be Mutsuki’s scent. Ghouls can determine gender by scent - usually).
Of course, we don’t know how the other Quinx taste, but it does seem that it takes more to be ‘tasty’ than simply being a OEG/Quinx.