right up one’s alley

right up (one's) alley

Ideally suited to one's interests. Anna loves watching movies, so I'm sure she'll go to the film festival with you—that's right up her alley. This course seemed right up my alley when I signed up for it, but it ended up being dreadfully boring.
See also: alley, right, up
Farlex Dictionary of Idioms.

(right) up one’s alley

mod. exactly one’s kind of thing; exactly what one is best equipped to do. It’s not exactly up my alley, but I’ll try it.
See also: alley, right, up
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • right up (one's) alley
  • right up one's alley
  • right up one's alley, to be
  • right up your alley
  • right up your street
  • up your street
  • (just/right) up (one's) street
  • be (just/right) up (one's) street
  • be up your street
  • be up (one's) alley