Tā shì zhuānyè chúshī, zuò zhè dào cài bùzàihuàxià.
He is a professional chef; making this dish is a cinch for him.
Tips
usage
不在话下 expresses that something is so easy or obvious for someone that it does not need to be discussed. Similar to English 'goes without saying' or 'it's a piece of cake.' Usually follows 对...来说 (for...) constructions.
