While it's straightforward to assume that Sakuya cooks separate pots for this, the one-pot scenario can still make professional sense if Patchouli's vegetables were not stewed – but perhaps grilled instead and are toppings like Remilia's nattō.
Both "Bon Curry" and "Satō Rice" are popular brands over there, and both are, like, really ol- Wait, what the- 🤨 Is this the name basis of Mr. 2 "Bon Clay" in One Piece?