Phrase(s): just the ticket
Fig. to be just the perfect thing. • This soup is just the ticket for a quick lunch. • A good, hot cup of coffee will be just the ticket.
McGrawhill's American Idioms And Phrasal Verbs
Also, that's the ticket. Exactly what is needed; exactly right. For example, This van is just the ticket for carrying all our luggage, or That's the ticket? you're handling that chain saw very well. The second phrase dates from the early 1800s, and the first is slightly newer. The exact allusion is disputed? it could be to a winning lottery ticket, a price tag for merchandise, or, as one writer suggests, a corruption of the French word etiquette for "appropriate behavior." For a synonym, see WAY TO GO.
American Heritage Idioms