Two San Francisco-trained baking heavyweights are teaming up under one West Oakland roof, but they are not sharing a menu. At O2 Artisans Aggregate, pastry chef Melissa Chou is bringing her Grand Opening pastries, from pineapple buns to her much-buzzed-about burnt honey pie, in February to coincide with Lunar New Year, while baker Estevan Silva is lining up Studio Estepan, a sourdough-centered project arriving later in the spring. The plan is intentionally small-scale: each baker will run a distinct menu out of a shared production space of roughly 1,000 square feet and sell limited batches on weekends. By splitting the rent, they aim to keep overhead down while still operating as solo owners of their own businesses.
Shared workspace, separate businesses
The two concepts will operate as independent brands within a single storefront at O2, giving each baker a dedicated production line and a weekend retail window without the full financial burden of a standalone bakery. As reported by the SF Chronicle, both projects are self-funded and plan to open only on weekends, with limited outdoor seating in the complex courtyard. The campus bills itself as a makers' hub that hosts studios and small food operations, becoming a practical home base for experimental, low-overhead hospitality ventures. O2 Artisans Aggregate has gained a local reputation as a spot where in-the-know food operators and craftspeople quietly set up shop.
What they'll bake
Chou has earned a following for Chinese American pastries and sweets, and her burnt honey pie has drawn national attention. It was highlighted on The New York Times' 2024 list of standout dishes, with The New York Times naming it among the country's best dishes. Her resume also includes multiple James Beard nods: she appeared on the foundation's semifinalist rosters in 2012 and 2016, recognition that speaks to the level of polish behind Grand Opening. Listings on the James Beard Foundation site for 2012 and on the James Beard Foundation site for 2016 document those earlier honors.
Silva, who built the bread program at Quince and spent roughly eight years overseeing bread across that restaurant group, is planning a sourdough-heavy lineup that roams far beyond a standard country loaf. The menu is expected to pull from global influences, including shokupan, Korean salt bread, pan dulce-style conchas, and savory, grab-and-go loaves. StarChefs details Silva's background and his work at Quince, Cotogna, and Verjus.
When to go
Chou is targeting a February debut to align the Grand Opening with Lunar New Year festivities, while Silva anticipates Studio Estepan will start baking later in the spring. Both outfits plan to stick to weekend service and small production runs. Drinks for the space will come from Grand Coffee, which, as the SF Chronicle notes, opened a roastery at O2 last year. The paper reports that customers should expect limited quantities and early sellouts, given the weekend-only schedule and outdoor-only seating in the courtyard.
What this could mean for Bay Area bakers
The shared-studio setup at O2 reflects a broader move among Bay Area chefs to dodge steep rents and pricey build-outs. By relying on shared production spaces, pop-ups, and maker campuses, cooks can reach customers without locking themselves into a full-scale brick-and-mortar. Coverage of O2's rise as an industrial-yard food destination, home to pop-ups like June's Pizza and other makers, shows how the campus has become a proving ground for smaller, sustainability-minded food businesses. Oaklandside has chronicled how the site continues to draw curious, food-focused crowds.
