In the ultimate ode to National Doughnut Day, Bob’s Donuts, a San Francisco institution known for apple fritters and a paper plate-tipping “big donut,” announced plans to open a new location in San Francisco.

The news came via an Instragram post Friday morning in which the business shared a photo of a paper-covered window bearing the words “Bob’s on Baker Street.” The caption read: “601 Baker St, coming soon!” The Chronicle has reached out to co-owner Aya Ahn for more information.

The new location is taking over the former home of Chile Pies Baking Co., which closed in 2018. Bob’s Donuts flagship location in Nob Hill (1621 Polk St.) remains open and the owners did not announce a potential opening date for the forthcoming outpost.

The shop has roots in the city that can be traced back to 1959 and it even still uses the brand’s original name and logos. Elinor Ahn, a Korean immigrant, purchased Bob’s from the first owner in 1977 and her family has been at the helm ever since.

Few places in San Francisco’s food scene are as democratic as Bob’s Donuts. With ease, the family-owned spot can serve raised glaze and apple fritters for less than $2 to both SantaCon revelers and young families touring the city.

Beyond the food and blue-collar ambiance, Bob’s is also a popular spot for ambitious eaters. In 2012, the business launched the Bob’s Giant Doughnut Challenge, wherein customers try consuming a “giant donut,” which is equivalent to 12 of the Bob’s glazed doughnuts, in under three minutes.

Those who succeed are gifted a Bob’s Donut’s shirt. Only 22 people have ever finished the doughnut in under two minutes.

Justin Phillips is a San Francisco Chronicle staff writer. Email: jphillips@sfchronicle.com. Twitter: @JustMrPhillips