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Home - Cooking - Substitutes

Latest Updated: Feb 28, 2026 by Andrew Gray

5 BEST Substitutes for Pasta Water

The best substitutes for Pasta Water are Cornflour, Potato Starch, Tapioca Starch, Cornstarch, and Xanthan Gum.

Cornflour is the closest match - it has a similar flavor and works at a 1:1 ratio in most recipes.

For cooking, Potato Starch also works well - adjust the amount to taste since it may be slightly stronger or milder.

Oops! Forgot to save that pasta water again, huh?

Pasta water is like gold in the kitchen - it thickens sauces and glues pasta and sauce together.

What do you do if you've already sent it down the drain?

Think of these as your kitchen's pinch hitters, ready to step up to the plate.

Chicken broth? Absolutely. Milk? Why not.

Each substitute comes with its own set of perks, making your sauce stick to your pasta like they're best friends.

Table of Contents

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  • 5 Effective Replacements for Pasta Water
    • 1 - Cornflour
    • 2 - Potato Starch
    • 3 - Tapioca Starch
    • 4 - Cornstarch
    • 5 - Xanthan Gum
  • Frequently Asked Questions

5 Effective Replacements for Pasta Water

Pasta water, the starchy liquid left after boiling pasta, is often used in various recipes to improve the texture and flavor of sauces and dishes.

However, if you don't have access to pasta water or need a substitute, there are several alternatives to consider.

SubstituteKey CharacteristicsProper Ratio
CornflourFine powder made from corn kernels with a neutral flavor and excellent thickening propertiesUse 1 tablespoon of cornflour mixed with 2-3 tablespoons of water for every 1 cup of pasta water
Potato StarchStarch derived from potatoes that adds a smooth and creamy texture to saucesUse 1 tablespoon of potato starch mixed with 2-3 tablespoons of water for every 1 cup of pasta water
Tapioca StarchStarch extracted from the cassava root, providing a glossy finish and great thickening powerUse 1 tablespoon of tapioca starch mixed with 2-3 tablespoons of water for every 1 cup of pasta water
CornstarchFine powder made from corn kernels, similar to cornflour but with a higher starch contentUse 1 tablespoon of cornstarch mixed with 2-3 tablespoons of water for every 1 cup of pasta water
Xanthan GumNatural thickening agent that creates a gel-like texture and improves sauce consistencyUse ¼ to ½ teaspoon of xanthan gum mixed with 2-3 tablespoons of water for every 1 cup of pasta water

Here is a closer look at each option:

1 - Cornflour

cornflour Save for Later!

First on our list is cornflour, also known as maize flour.

Cornflour is made by grinding dried corn kernels into a fine powder.

The powder is then sifted to remove any coarse pieces.

The resulting flour is then bleached to achieve the desired color.

Cornflour can be either white or yellow, depending on the type of corn used to make it.

Cornflour is often used as a thickening agent for sauces and soups, and it can also be used to make breading and batters.

It can also be used as a replacement for wheat flour in recipes.

Cornflour is gluten-free and has a higher protein content than wheat flour.

It is also lower in calories and fat.

Cornflour is a great choice if you're looking for a thick, rich texture and flavor.

  • Key Characteristics: Cornflour is a fine powder made from corn kernels with a neutral flavor. It has excellent thickening properties, making it an ideal substitute for pasta water.
  • Proper Ratio: Use 1 tablespoon of cornflour mixed with 2-3 tablespoons of water for every 1 cup of pasta water. Adjust the quantity based on the desired thickness of the sauce or dish.

2 - Potato Starch

potato starch Save for Later!

Potato starch is a fine, white powder produced by extracting the starch from potatoes.

It is commonly used as a thickening agent in soups and sauces, and it can also be used to make gluten-free flour.

Potato starch is high in carbohydrates and contains a moderate amount of protein.

It is also a good source of fiber. Potato starch can be used in baking or coating fried foods.

It is also sometimes used as a binding agent in pillows and mattresses.

Potato starch is relatively low in calories and has a neutral taste, making it a flexible ingredient for many different dishes.

  • Key Characteristics: Potato starch is derived from potatoes and adds a smooth and creamy texture to sauces. It can be used as a substitute for pasta water, improving the consistency of dishes.
  • Proper Ratio: Use 1 tablespoon of potato starch mixed with 2-3 tablespoons of water for every 1 cup of pasta water. Adjust the quantity based on the desired thickness of the sauce or dish.

3 - Tapioca Starch

tapioca starch Save for Later!

Tapioca starch is a flexible ingredient used in many different applications.

With its thick, glue-like texture and neutral flavor, tapioca starch can be added to baked goods, from cakes and biscuits to bread and granola bars.

It can also be used as a thickener for sauces and soups or a binding agent in meatballs or patties.

Also, because tapioca starch contains many essential nutrients like folate, potassium, calcium, and fiber, it can even be eaten on its own as a healthy and filling snack.

Whether you're looking for the perfect ingredient for your latest baking project or want an easy way to add more nutrients to your diet, tapioca starch is worth checking out.

  • Key Characteristics: Tapioca starch is extracted from the cassava root and provides a glossy finish and great thickening power. It can be used as a substitute for pasta water in various recipes.
  • Proper Ratio: Use 1 tablespoon of tapioca starch mixed with 2-3 tablespoons of water for every 1 cup of pasta water. Adjust the quantity based on the desired thickness of the sauce or dish.

4 - Cornstarch

cornstarch Save for Later!

Cornstarch is a powder made from the endosperm of the corn kernel.

It is a flexible ingredient used in many different recipes, from thickening sauces to making gluten-free baked goods.

Cornstarch is also a great natural alternative to synthetic ingredients like xanthan gum.

When combined with water, cornstarch forms a gel-like substance that can be used as a binding agent or emulsifier.

It is also an effective thickener for soups, stews, and gravies.

In addition to its culinary uses, cornstarch can also be used as natural laundry starch or cleaning agent.

When combined with vinegar, cornstarch makes an excellent window cleaner.

It can also be used to polish silver and remove stains from clothing.

Whether you're using it in the kitchen or the laundry room, cornstarch is a flexible ingredient that everyone should have on hand.

  • Key Characteristics: Cornstarch is similar to cornflour but has a higher starch content. It can be used as a substitute for pasta water, offering excellent thickening properties to sauces.
  • Proper Ratio: Use 1 tablespoon of cornstarch mixed with 2-3 tablespoons of water for every 1 cup of pasta water. Adjust the quantity based on the desired thickness of the sauce or dish.

5 - Xanthan Gum

xanthan gum Save for Later!

Xanthan gum is a food additive used to thicken and stabilize foods.

It is derived from a type of bacteria, and it is often used in gluten-free products as a replacement for wheat flour.

Xanthan gum has many benefits, including improving the texture of foods, preventing ice crystals from forming, and extending the shelf life of products.

It is also relatively safe to consume, although some people may experience digestive issues when eating large amounts of xanthan gum.

  • Key Characteristics: Xanthan gum is a natural thickening agent that creates a gel-like texture. It improves sauce consistency and can be used as a substitute for pasta water.
  • Proper Ratio: Use ¼ to ½ teaspoon of xanthan gum mixed with 2-3 tablespoons of water for every 1 cup of pasta water. Adjust the quantity based on the desired thickness of the sauce or dish.

Frequently Asked Questions

What is the best substitute for Pasta Water?

Cornflour is the best substitute for Pasta Water because it shares a similar flavor and texture. Use it at a 1:1 ratio in any recipe that calls for Pasta Water.

What works as a replacement in recipes?

Yes. Cornflour and Potato Starch work as direct replacements in most recipes.

Use the same quantity and adjust seasoning after tasting.

Does the substitute change cooking time or temperature?

Usually not, but check moisture content. Wetter substitutes may need a slightly higher temperature or longer cook time to evaporate excess liquid and achieve the right texture.

Is the substitute appropriate for all dietary restrictions?

Check labels carefully.

Many substitutes introduce allergens or ingredients that conflict with specific diets - dairy, gluten, soy, or nuts may appear in processed alternatives.

Explore more: This post is part of our Ingredient Substitutes Guide.
Andrew Gray

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