Touhou - The Sparrow's Midnight Dining (Doujinshi) - Vol. 3 Ch. 8 - Night 8 - Boiled Egg

[MangaDex]

 

[Mukuro234]

I mean for Kanako and Suwako defense maybe they just left the cooking and stuff to Sanae and they don't know any modern cooking utensil...

 

[Kuroh]

I mean for Kanako and Suwako defense maybe they just left the cooking and stuff to Sanae and they don't know any modern cooking utensil...

its my head canon that kanako knew exactly what will happen but decided to let it run because its entertaining
she barely reacted