The Soup Thickening Trick All Bread Lovers Should Know About - Tasting Table
Briefly

"Sourdough discard can be functionally used like a roux or cornstarch slurry with the added benefit of greater nutritional value. Its creamy texture makes it ideal for soups."
"Discards not only contribute to the thickness of soups but also infuse them with a naturally pungent, pleasantly sour aroma, enhancing overall flavor profiles."
Read at Tasting Table
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