What is Cornstarch?

Cornstarch is a carbohydrate obtained from the corn endosperm. This powdery white material has numerous industrial, domestic, and culinary uses. It was created in New Jersey in 1844, and today it is manufactured there as well as in China, Brazil, India, and other nations that cultivate maize. The majority of the time, cornflour is used in the kitchen to thicken marinades, sauces, gravies, glazes, soups, casseroles, pies, and other desserts.

It is used in food across the globe, with North America and Asia dominating both production and consumption. To produce cornflour, which is more refined, the corn kernel’s protein and fiber must be removed, leaving only the endosperm, the starchy inside. The result is turned into a white powder.

What is Cornstarch?

Cornflour is not particularly unusual. We all utilize it daily. But frequently, we don’t give cornflour or its production any thought. We shall look into maize starch in this part. As you might have suspected, whole corn kernels are used to make corn flour.

It is produced using the corn’s starchy kernel. Although cornflour is often white, it can also be yellow or blue depending on the type of corn used. Get a package of cornflour if you like gluten-free foods.

All-purpose starch can be substituted in baking with cornflour. From bread to waffles, cornflour can be used as a gluten-free starch.

What Does Cornstarch Taste Like?

It tastes tasteless to eat cornflour. Despite being made from maize, corn starch doesn’t taste like corn at all. When it is uncooked, it almost has no flavor. Corn flour has a flavor that is almost identical to regular all-purpose starch.

Although cornflour has no taste when it is fresh, when it is cooked, it takes on a faintly sweet flavor. However, adding cornflour doesn’t change the flavor of the food. (This is one factor in its appeal on a global scale!).

The texture of cornflour can be described as smooth and powdery. It resembles powdered sugar in appearance a lot. Corn starch transforms into a smooth, creamy texture when combined with water.

What is the Difference Between Cornflour and Cornstarch?

We frequently conflate the terms corn flour and cornflour. Many individuals believe that they are both interchangeable. That is untrue; corn flour and corn flour are two distinct substances.

Because the entire corn kernel is ground to make corn flour, it is very nutrient-dense. Corn flour, on the other hand, is made from corn starch. It is nutritionally worthless.

Both corn flour and corn flour can be used interchangeably in cooking. The effects of these two chemicals vary, though. Corn starch is an excellent thickening agent, however, corn flour doesn’t thicken as well as corn starch does.

However, corn flour is preferred over corn flour when baking because corn flour has a bland flavor and doesn’t give any flavor to the finished product. On the other hand, corn flour does have a subtle sweetness and a pleasant, earthy flavor that it lends to the recipe.

How To Tell If Cornstarch Has Gone Bad?

Cornstarch, like many other dry pantry staples, has a long shelf life if stored properly. However, it can lose its effectiveness over time or become spoiled if exposed to moisture or contaminants. Here are some signs to look for to determine if cornstarch has gone bad:

  1. Visual Inspection: Check for any signs of discoloration, such as yellowing or darkening of the cornstarch. Discoloration may indicate moisture absorption or the presence of mold.
  2. Texture and Consistency: Cornstarch should be a fine, powdery substance. If it feels clumpy, lumpy, or has a hardened texture, it may have absorbed moisture and become unusable.
  3. Odor: Fresh cornstarch typically has a neutral odor. If you detect any unusual or foul smells, it may indicate spoilage or contamination.

If you notice any of these signs, it is best to discard the cornstarch and obtain a fresh supply. Using spoiled or compromised cornstarch may negatively affect the quality and safety of your recipes.

How to Store Cornstarch?

To ensure the longevity and quality of cornstarch, it’s important to store it properly in a cool, dry place. Here are some tips on how to store cornstarch effectively:

  1. Container: Transfer cornstarch from its original packaging to an airtight container. A glass jar with a tight-fitting lid or a plastic container with a secure seal works well. This helps to keep out moisture, pests, and odors.
  2. Cool and Dry Location: Choose a storage area that is cool and dry, away from sources of heat and humidity. Ideally, the temperature should be below 75°F (24°C). Avoid storing it near the stove, oven, dishwasher, or any other appliances that generate heat or moisture.
  3. Avoid Direct Sunlight: Exposure to direct sunlight can affect the quality of cornstarch over time. Store it in a dark pantry or cupboard to protect it from light.
  4. Moisture Prevention: Cornstarch easily absorbs moisture, which can cause it to clump and spoil. Make sure the storage container is tightly sealed to prevent any moisture from getting in. Additionally, keep it away from humid areas such as the kitchen sink or dishwasher.
  5. Labeling and Rotation: If you frequently use cornstarch or have multiple containers, it’s helpful to label them with the purchase or expiration date. This allows you to keep track of freshness and use older stock first, ensuring proper rotation.

Can We Eat Raw Cornstarch?

It is a great food option for folks on diets or trying to watch their health because it often has few calories and carbohydrates.

Additionally, because of its minimal glucose content, it seldom has any impact on blood sugar levels.

Cooking with corn starch as a thickening agent results in sauces that are more viscous without adding fat or changing the flavor of the food, which is advantageous for diabetics.

However, eating raw cornflour might cause gastrointestinal problems by trapping bacteria in the stomach’s acidic secretions.

What are the uses of Cornstarch?

Here are some key characteristics and uses of cornstarch:

Thickening Agent

One of the primary uses of cornstarch is as a thickener in various recipes. When mixed with a liquid and heated, cornstarch undergoes a process called gelatinization, forming a thick, smooth consistency. It is often used to thicken sauces, gravies, soups, and custards.

Texture Enhancer

Cornstarch is prized for its ability to improve the texture of baked goods and certain dishes. It can give baked goods a lighter, tender, and more delicate texture. It is commonly used in cakes, cookies, pastries, and puddings.

Gluten-Free Alternative

Cornstarch is naturally gluten-free, making it a suitable option for individuals who have gluten sensitivity or celiac disease. It can be used as a substitute for wheat flour or other gluten-containing thickeners in recipes.

Binding Agent

Cornstarch can act as a binding agent in recipes, helping to hold ingredients together. It is often used in dishes like meatballs or veggie burgers to improve texture and prevent crumbling.

Sauce and Gravy Clarity

When used as a thickening agent, cornstarch creates a translucent texture, which can help maintain the clarity of sauces and gravies. This can be desirable when a clear or glossy appearance is desired.

Anti-Caking Agent

Cornstarch is also used as an anti-caking agent to prevent clumping in powdered or granulated products. It is commonly found in spice blends, powdered sugar, and other pantry staples.

How is Cornstarch Made?

Cornstarch is made through a process called wet milling, which involves several steps to extract the starch from corn kernels. Here is a simplified overview of the cornstarch production process:

  1. Cleaning: The corn kernels are thoroughly cleaned to remove any impurities, debris, or foreign materials.
  2. Soaking: The clean corn kernels are soaked in water with a small amount of sulfur dioxide or another suitable agent. This step helps soften the kernels and begin the process of separating the various components.
  3. Grinding: The soaked corn kernels are ground to break them into small pieces. This process releases the starch, germ, protein, fiber, and other components present in the corn.
  4. Separation: The ground corn slurry is passed through a series of screens and centrifuges to separate the different components. The starch is separated from the other components like fiber, germ, and protein.
  5. Washing: The separated starch is then thoroughly washed to remove impurities, residual protein, and fiber. This step helps purify the starch and improve its quality.
  6. Drying: The washed starch is dried using specialized drying equipment, such as flash dryers or rotary dryers. The goal is to remove moisture and bring the starch to the desired moisture content.
  7. Milling: The dried starch is milled into a fine powder to create the final cornstarch product. This milling process ensures a consistent particle size and texture.
  8. Packaging: The cornstarch is packaged in suitable containers, such as bags or boxes, for distribution and sale.

It’s important to note that the cornstarch production process may vary slightly among manufacturers, and additional steps or variations can be involved. However, the overall principle of wet milling to extract starch from corn kernels remains consistent.


In conclusion, cornflour is a fantastic component to have on hand in the kitchen. Depending on the situation, you can use it in place of flour or sugar. It has a variety of purposes.

The taste of any dish won’t be impacted by cornflour, unlike with some alternative substitutions. Depending on the meal it is used in, you’ll receive the same consistency with fewer calories or carbohydrates.