In the 6th day of Daily Sign-in Rewards in Ragnarok M Eternal Love. There is a road block that requires you to answer an questions. You only need to answer the question with 2 choices, and in order to get the reward you need to answer it correctly.
The questions is How to obtain food materials from monsters?, the answer for that question is Use Chef’s Eagle Eye.
Chef’s Eagle Eye is used in order for you to loot food material from a monster without buying it from the NPC shops. Using Chef’s Eagle Eye is also stackable, meaning you can use as many times you want and it will add the duration you can get food materials loot from the monsters.