This page explains how to start and complete the Koko's Specialty side quest.
How to Start the Quest
Before you can start this quest, you must first complete the quest Koko's Cuisine. Then you can talk to Koko outside of the produce store in Kakariko Village between noon and 7PM to start the quest.
How to Complete the Quest
Give Koko some Courser Bee Honey to complete the quest. You will get a Honeyed Apple, and the recipe can be found in the record of the Koko's Specialty quest in the Adventure Log.