Is Levain vegan?

Sourdough Starter is also known as Levain.

Sourdough Starter (also known as starter culture or sourdough culture) is a mixture of flour and water inhabited by wild yeast and lactic acid bacteria that leaven bread through fermentation. It is typically made from plant-based ingredients, though some recipes include dairy (e.g. yogurt). Bread leavened with sourdough starter is called sourdough bread.

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