Cachet is the third foal and first winner of Poyle Sophie (Teofilo), who was placed once. Poyle Sophie is a half-sister to five winners, among them the nine-time winner Another True Story (Piccolo), the six-time winner Lady Elysia (Champs Elysees) and the three-time winner Poyle Meg (Dansili).

Second dam Lost In Lucca (Inchinor), a winner, is the dam of Poyle Meg (Dansili), a half-sister to Poyle Sophie, who produced Whisper Not (Poet's Voice), winner of the Grade 3 San Francisco Mile and third in the Grade 2 Mathis Brothers Mile. Lost In Lucca is also a half-sister to the once-placed Poyle Dee Dee (Oasis Dream), dam of the Listed-placed Could Be King.

Third dam Poyle Fizz (Damister) was unraced and is a half-sister to Brave Bambino (Jaazeiro), third in the Gr.1 Futurity Stakes.

This is the family of Jemima (Owington), a half-sister to Lost In Lucca and winner of the Gr.2 Lowther S., whose offspring include the sire English Colony (Rock of Gibraltar), a Listed winner in the US, and Jemima's Pearl (Distorted Humor), placed in the Grade 2 Fantasy S.

Poyle Sophie has a two-year-old filly by Kuroshio and a yearling filly by Cotai Glory, and she was covered by Mehmas in 2021.