A fresh batch of pies is baked every day at 11:00 and 17:00 (UTC+8).
If you "Order" pies to Rorona on the Quest screen, you will receive them. Taking one of her pies recovers 100 stamina.
Up to two pies can be kept in stock. Any pies you don't take by 11:00 (UTC+8) on the following day will disappear.
Orders are unlocked by clearing Chapter 1-17.