You’re not the only one wondering how to make kublick using cornstarg and water. This recipe can be modified to suit your taste and needs. If you’re not a fan of cornmeal, you can also use flour instead of cornstarch. Both are very stable thickeners but flour doesn’t have the same glossy shine as cornstarch. You can substitute cornstarch with baking powder or even arrowroot if you don’t want to use it. The only thing to remember is to make sure you bring your liquid to a boil first before thickening with these two ingredients.