The grammar structure にかけては is used to express that someone or something is exceptionally skilled, outstanding, or unmatched in a particular area or domain. It translates to "when it comes to" or "as far as ~ is concerned" and carries a strong nuance of praise or high evaluation.
Unlike the more neutral にかんして関して ("regarding") or について ("about"), にかけては specifically implies that the subject excels or stands out in the area being discussed. It is almost always followed by a positive evaluation – something like "the best," "nobody can beat them," "outstanding," etc.
The topic before にかけては is typically a skill, field, or attribute – not just any noun. Common examples include areas like りょうり料理, すぽうつスポーツ, すうがく数学, or qualities like すぴいどスピード, にんたいりょく忍耐力.
Because this pattern inherently highlights superiority or excellence, it sounds unnatural when followed by a negative evaluation about the subject's ability. For example, saying 「料理にかけては下手だ」 would be contradictory and unnatural.
にかけては can also be used about oneself, though this sounds confident or even boastful.