Levain Bakery

Six ounces of dough, a crisp shell and a center that never quite finishes setting: the Chocolate Chip Walnut Cookie is the reason a bread bakery on the Upper West Side became a New York institution. Constance McDonald and Pamela Weekes opened Levain in 1995 with sourdough in mind, and the cookie they built as endurance fuel took the place over.

From wholesale bread to a six-ounce cookie

McDonald and Weekes met through swimming and trained together in the early 1990s, one arriving from fashion, the other from finance. The plan was artisanal bread, and the name says so: levain is the French word for a sourdough starter. The business ran first as a wholesale bread operation, built on hands-on experimentation rather than a formal chef hierarchy.

The cookie arrived as training food for Ironman work: calorie-dense, oversized, chocolate chips and chunky walnuts, crisp at the edge and gooey through the middle. Early batches were tiny, a dozen at a time and later around a hundred in an afternoon in the basement shop. They sold out on introduction, and the attention moved from the bread to the cookie for good.

A counter, a line and a paper bag

Levain is grab-and-go rather than a room to sit in. The original Upper West Side storefront was tiny and needed serious renovation, and the basement bakeshop under it still runs through the story the bakery tells about itself. What began quietly turned into a neighborhood fixture with a line out the door, especially at the flagship.

Growth followed the cookie. A Wainscott outpost opened in the Hamptons in June 2000, then came the Upper East Side, NoHo, Williamsburg and Harlem, and later Washington, D.C., Chicago, Boston, Los Angeles and Philadelphia. Shipping and catering carried the same short list of bakes further still. Through all of it the format has not moved: order at the counter, carry it out warm.

Start with the Chocolate Chip Walnut

Order the Chocolate Chip Walnut Cookie first. It is the bake that changed the bakery's direction, and its appeal is scale and structure rather than delicacy: a softball-sized round with a thick center, chocolate throughout and walnuts breaking up the sweetness.

After that, choose by profile. Two Chip Chocolate Chip drops the walnuts and doubles the chocolate. Dark Chocolate Chocolate Chip goes deeper and less sweet. Dark Chocolate Peanut Butter Chip adds a nutty contrast, and Oatmeal Raisin is the chewy, fruit-and-oat option for anyone who wants a break from chocolate. Seasonal cookies rotate alongside the permanent lineup, and the six-ounce format is copied widely enough now that Levain's original reads as the template for the modern oversized bakery cookie.