right up one's alley

Idioms and Phrases

Also, right down one's alley . In one's specialty, to one's taste, as in Writing press releases is right up her alley , or He loved opera, so this program of arias was right down his alley . These idioms use alley in the sense of “one's own province,” a usage dating from the early 1600s. [First half of 1900s] Also see cup of tea .