[1] Lisa Nguyen started the business as a pop-up restaurant in 2020, during the COVID-19 pandemic, before moving to the food cart pod Collective Oregon Eateries in southeast Portland's Lents neighborhood in 2023.

The doughnut shop HeyDay operates in the food cart pod Collective Oregon Eateries (CORE) in southeast Portland's Lents neighborhood.

[11] Lisa Nguyen started HeyDay as a pop-up in May 2020,[2][12] during the COVID-19 pandemic,[5] initially selling at local cafes and tea shops including Portland Cà Phê.

[12] In 2024, HeyDay launched Sunday Bakeshop, a rotating menu of cakes, cookies, cream puffs, macarons, pies, and other Vietnamese baked goods and desserts.

The business uses the social media outlet to spread the word, and the photogenic, uniquely shaped and charmingly decorated rings cry out to be posted on your feed.