What is cornstarch Published on Jul 17, 2020 Updated on Jul 28, 2020 in « Back to Glossary IndexCornstarch is a flour derived from corn, and used as a thickening agent in liquid based foods, as well things like gloves, and baby powder. Cornstarch is used in replacement of a roux to make recipes gluten-free. Related Articles:Glossary: slurryVegan Mushroom GravyYou will love how easy, quick, and healthy this vegan gravy recipe is to make. The recipe is literally just 6 ingredients! Super flavorful and simple!Ultimate Vegan Green Bean CasseroleIt is that time of the year again! Thanksgiving. We are happy to be able to bring you this version of the classic vegan green bean casserole!