Xanthan gum is a popular food additive that's commonly added to foods as a thickener or stabilizer. It's created when sugar is fermented by a type of bacteria called Xanthomonas campestris. When sugar is fermented, it creates a broth or goo-like substance, which is made solid by adding an alcohol.
Outside of baking, xanthan gum is also used to thicken sauces, gravies, dressings, and ice cream.
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