Cornstarch is obtained from the kernel of the maize plant.You can use it in cooking as a thickening agent for liquids such as sauces, gravies and broths. If you add too much water or broth to a soup, you can use cornstarch to thicken it to your preference. Using cornstarch, you can transform soup with broth no thicker than water to a gravy-like consistency, and anywhere in-between. Thickening soup with cornstarch requires approximately 15 minutes.
Things You'll Need
- Small microwave-safe bowl
- Wooden spoon
Pour 3 tbsp. water into a small bowl for every 3 cups of soup you need to thicken. Microwave in 15-second increments until it boils.
Add 4 tbsp. cornstarch to the boiling water for every 3 cups of soup. Whisk the cornstarch into the water until it forms a smooth consistency.
Pour the water and cornstarch mixture into your soup and stir with a wooden spoon for 60 seconds. Simmer the soup for 15 minutes over low heat.
Sample the soup's broth. If it is not thick enough for your taste, make a second batch of water and cornstarch and repeat the process.
Tips & Warnings
- If you do not whisk the cornstarch into the water completely, it will create tasteless lumps in your soup.
- "Cooking Basics for Dummies"; Bryan Miller, Marie Rama and Eve Adamson; 2011
- Photo Credit Jupiterimages/Goodshoot/Getty Images
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