expression, i-adjective
irresistible to connoisseurs; a must for enthusiasts
Used when something is so appealing that a connoisseur or enthusiast cannot resist it. Often appears in recommendations or descriptions of specialty items, events, or experiences.
この限定版のウイスキーは通にはたまらない逸品だ。
This limited-edition whiskey is an irresistible item for connoisseurs.
通にはたまらない隠れ家的なレストランを見つけた。
I found a hidden-gem restaurant that enthusiasts will find irresistible.
通 is a noun meaning 'connoisseur' or 'expert'; 通にはたまらない is a set phrase built on it.
たまらない means 'unbearable' or 'irresistible'; here it is used in the pattern 〜にはたまらない to mean 'irresistible to ...'.
A set phrase combining 通 (connoisseur) with the expression 〜にはたまらない (irresistible to ...). The derivation is transparent from its components.