At a holiday market in Somerville's Armory, Somerville-based Culinary Cruisers — kombucha makers — debuted a new project called Union Square Donuts, serving up flavors like chocolate chipotle and honey glaze with toasted almonds. The team mentioned that plans for a retail space were in the works.

[Photo: Twitter]

On Valentine's Day, Union Square Donuts — a collaboration between Josh Danoff (Culinary Cruisers/Ocean Ave Pops) and Heather Schmidt (City Chicks) — opened its first retail location inside of Kitchen Inc., a shared cooking space on the edge of Union Square. The starting lineup of flavors included maple bacon, hibiscus rose, orange ginger cream, and more, as well as dulce de leche cinnamon buns. In the early days, the shop was open only from Friday through Sunday.

[Photo: Rachel Leah Blumenthal for Eater]

After just a few months at Kitchen Inc., Union Square Donuts moved across the square to share Cafe Tango's space, offering up more space, more doughnuts, and more hours. It was around this time that the little doughnut shop began racking up tons of press, both locally and nationally. Shop hours increased over time, and meanwhile, the team continued to appear at farmers' markets all around the Boston area, which it had been doing since the very beginning.

[Photo: Facebook]

With plans for a larger, non-shared space in motion, Union Square Donuts debuted a vegan doughnut, originally only available on Saturdays. The yeast-raised doughnut was made with coconut oil and coconut milk, and flavors varied depending on the week. Later, in January 2015, the shop — in a bigger space by then — permanently added vegan doughnuts to the lineup, with two varieties always available (a cinnamon sugar doughnut and a seasonal glazed selection).

[Photo: Facebook]

At last, Union Square Donuts got its own non-shared space — still in Union Square, just a couple doors down from the previous space. A former convenience store was transformed into a den of reclaimed wood, sunlight, sugary treats, and coffee and tea.

[Photo: Facebook]

After 15 years, the Boston Public Market finally opened downtown, and Union Square Donuts was a vendor from day one. Open 8 a.m. to 8 p.m. Wednesday through Sunday.

[Photo: Facebook]

Union Square Donuts joins the cluster of containers at The Innovation and Design Building in the Seaport. The doughnuts are available at Triangle Coffee's kiosk on weekdays starting at 8 a.m. (until sold out). Meanwhile, the Somerville headquarters adds Mondays to the schedule — it's now open seven days a week.

[Photo: Mei Mei's shipping container/Official Site]

Open daily from 7 a.m. to 1 p.m. (or while supplies last), this new location will last for two months or more, depending on how things go. The Grillo's Pickles storefront used to be located here.

[Photo: Grillo's Pickles storefront/Rachel Leah Blumenthal]

No, Newbury Street clothing store Johnny Cupcakes doesn't sell cupcakes. But starting in mid-May 2016, it will at least sell one kind of baked good — "doughies" from Union Square Donuts, thanks to a partnership announced in April 2016. The brioche doughnut dough balls are covered in glaze and sprinkles.

[Photo: USD in Somerville/Facebook]