Ratatouille moment

noun1

1. •
   (informal, figurative) A sudden, vivid emotional or sensory memory, typically triggered by a smell, taste, sound, or experience, that powerfully recalls a past time or feeling, often from childhood.

   • Such attention to detail helped Deakes achieve his very own Ratatouille moment with a client at a corporate dining facility. He'd made her a butterbeer latte, as in the flavor from Harry Potter. — 2023