Sol Bakery opens in San Francisco, sourdough techniques shape pastries

Marisa Williams did not build Sol Bakery on a single-school playbook. She passed through Tartine, Craftsman & Wolves, Neighbor Bakehouse, Mister Jiu’s and Sorrel, then sharpened the same hybrid skill set in Copenhagen and Berlin, and that mix is exactly why her permanent shop matters. Sol opened on April 11 in San Francisco’s Panhandle neighborhood after a 2024 pop-up drew the kind of line that usually buys a baker a longer lease and a bigger reputation.

What Williams is bringing into the storefront is not just bread with a good crust. The menu leans on sourdough as a working ingredient across formats: focaccia made with sourdough, sourdough-heavy croissants, a chocolate sourdough cake, and the guava tarts that helped build the bakery’s following, plus a rotating slate of seasonal pastries. That is the real shift here. Williams is treating naturally leavened dough the way a pastry kitchen treats butter and sugar, as a base system that can be bent toward flaky, savory or deeply flavored finishes without losing its character.

For sourdough bakers, the useful takeaway is in the method, not the merchandising. A sourdough focaccia is a reminder that starter can do more than lift a boule, and a sourdough croissant points to what happens when lamination meets fermentation: more depth, more aroma and a little more tension in the dough before the oven ever sees it. The chocolate sourdough cake pushes that idea even further, using acidity and fermentation to support dessert instead of fighting against sweetness. That is the kind of cross-training you usually see after years in serious kitchens, not in a one-note neighborhood bakery.

Sol’s compact space and limited seating reinforce the same lesson the pop-up taught in 2024: scarcity can be part of the appeal when the product feels exacting. Goods are expected to move quickly, and the line-inducing crowd that followed Williams from temporary setup to permanent storefront suggests San Francisco is ready for a bakery that treats sourdough as both technique and identity. In a city full of good bread, Sol is opening with a sharper premise: the starter is not just in the loaf, it is in the whole bakery.