That's right up my cup of tea

OOo – I like that. That’s right up my cup of tea, that is.

Neil Fox on Magic Breakfast Radio Show

A mixed idiom made up from

1. That’s right up my alley, and
2. Just my cup of tea.

Source of this Mixed Idiom

Found via Digital Spy forum mixed idiom post.

Also referenced by Susie Dent here:

More malaphors: 'you can't teach an old leopard new spots' , and 'until the cows freeze over'. Oh, and 'that's right up my cup of tea'.

— Susie Dent (@susie_dent) April 25, 2017