Basic French Bread Batards — New Boulangerie Parisienne Starter 
You will need freshly fed sourdough starter, bread flour, sea salt, sugar, food oil and a small amount of cornmeal for dusting pans.
Liquids:
350 grams (1-1/2 cups) freshly fed and active sourdough starter at room temperature
50 grams (2 TBS) oil, melted lard, or butter
115 grams (4 ounces) of [...]

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Sourdough starters have been popular since the Sumerians and Egyptians and the Mayans discovered that grains mixed with water fermented.

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