This is the 3522nd most frequent Japanese word.
腕前
Skill; ability; proficiency.
腕前 here is used to indicate someone's skill or proficiency in a certain area, specifically cooking in this example.
彼の料理の腕前は本当に驚くべきものだ。
His cooking skills are truly remarkable.
腕前 is applied to express someone's artistic abilities or talents.
美術の腕前をもっと磨きたいと思っています。
I want to further sharpen my artistic skills.
腕前 describes the high level of skill in playing the piano.