The quest is unlocked after completing the All Hyrule, United scenario.
"The confectioner will soon depart on an expedition for wildberries, which are sweetest wherever it's very cold. Get her what she needs to survive in freezing temperatures."
"The confectioner returned from her frosty foraging alive and well, thanks to your freeze-resistant supplies. She found her wildberries and shared a recipe with you that uses them."
- Earn Recipe for Wildberry Crepe