Chef Dan Koester at Blame Butter, Chicago

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Dan Koester is a chef and owner known for his sourdough bread.

2025-11-25

Chef and Owner

Bad Butter Bakery / Blame Butter

Reviewed in the Chicago Tribune, with mention of his continued baking of sourdough bread.

Dan Koester is a chef and owner known for his sourdough bread.

Sourdough bread

Restaurant reviews: Bad Butter, a cult favorite bakery, and Blame Butter, a pietisserie, in Chicago.

Bad Butter Bakery, Blame Butter

Sourdough bread

Dan Koester still bakes sourdough bread, which was his first love.

Data Freshness: 3w ago

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