You can use isinglass in a sentence like this: "The winemaker added isinglass to the wine to help clarify it."
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Look in the link I will place below for the answer, Note there
are two sorts of Isinglass and Sodium silicate is also called
Isinglass in culinary parlance.
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is isinglass used in airplane windshields
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fried chicken
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I don't know about the Buick but the 1924 Ford Model T Touring
car had isinglass roll up windows.