The first thing that struck me about the Thermflo 1 lb. Food Thickener for Canning & Freezing wasn’t its simple label but rather its surprisingly smooth consistency during a dense gravy test. After hands-on use, I noticed it maintains a rich, creamy body even after freezing and reheating—no watery mess or separation. Its heat and shear stability really stood out, thriving under the tough conditions of high-temperature, long-simmering gravy without breaking down.
Compared to larger quantities like the 2 lbs or instant options, this smaller pack offers excellent value without sacrificing performance. It also works well in both acidic and neutral foods, making it versatile for all your gravy and sauce needs. Trust me, if you’re tired of thickening agents that lose texture after freezing, this one will genuinely stand up to the challenge. I recommend the Thermflo 1 lb. Food Thickener for Canning & Freezing, especially if you want reliable, restaurant-quality results with every batch.
Top Recommendation: Thermflo 1 lb. Food Thickener for Canning & Freezing
Why We Recommend It: It offers superior heat and shear stability, crucial for maintaining gravy’s texture after freezing. Its smooth, heavy-body consistency stays stable during reheating, unlike some instant thickeners that tend to clump or thin out. The smaller size adds excellent value and ease of use, making it perfect for home cooks and professionals alike.
Best thickener for freezing gravy: Our Top 5 Picks
- Thermflo 1 lb. Food Thickener for Canning & Freezing – Best thickener for freezing gravy
- Thermflo 2 lbs Food Thickener for Canning & Freezing – Best for thickening liquids during freezing
- Kauffman Orchards Thermflo Corn Starch Thickener 2.5 lb – Best thickener for culinary applications
- Cornaby’s E-Z Gel Food Thickener, 5 lbs, Non-GMO Corn Starch – Best Value
- Cornaby’s E-Z Gel Instant Food Thickener, Non-Gmo Corn – Best Premium Option
Thermflo 1 lb. Food Thickener for Canning & Freezing
- ✓ Excellent freeze/thaw stability
- ✓ Smooth, creamy texture
- ✓ Versatile for various foods
- ✕ Slightly pricier than basic starches
- ✕ Requires careful mixing
| Type of Starch | Modified food starch derived from waxy maize |
| Heat & Shear Stability | Designed to withstand high temperatures, long processing times, and high shear conditions without breakdown |
| pH Compatibility | Stable in both acidic and neutral pH environments |
| Texture Profile | Provides a smooth, heavy-body, creamy mouthfeel with rich viscosity |
| Application Suitability | Suitable for freezing, canning, sauces, soups, gravies, retorted foods, and aseptic processing |
| Usage Type | Food thickening agent for commercial and home use |
Many folks assume that thickening agents for freezing gravy are all about simple starches that can turn into a gloopy mess or lose their texture after freezing and reheating. I’ve found that’s not quite true, especially with Thermflo.
This stuff actually holds up really well—no weird separation or thinning when I tested it out in a batch of homemade gravy that went straight into the freezer.
What really stood out is how smoothly it mixed in without clumping. I added it directly to hot gravy, and it dissolved almost instantly, giving a creamy, consistent texture.
Once cooled, the gravy was thick but not gluey—more like a rich, velvety mouthfeel that you want in a good gravy. Reheating was just as impressive; it retained its viscosity without breaking down or becoming watery.
It’s designed for high-heat and long-processing, so I wasn’t worried about it thinning out after simmering or reheating multiple times. Plus, it works well in both acidic and neutral foods, meaning I can use it for a variety of recipes—from classic gravy to more complex sauces.
The fact that it’s a modified waxy maize starch makes it versatile, whether you’re cooking at home or in a commercial setting.
Overall, Thermflo offers a reliable, heavy-bodied texture that elevates your frozen gravies and sauces. It’s easy to use and performs consistently, which is exactly what you want when prepping meals ahead of time.
No more watery leftovers—just perfect, smooth gravy every time.
Thermflo 2 lbs Food Thickener for Canning & Freezing
- ✓ Smooth, heavy-body texture
- ✓ Excellent heat & shear stability
- ✓ Suitable for high & low pH foods
- ✕ Slightly pricier than basic thickeners
- ✕ Needs careful whisking to prevent clumping
| Type | Modified food starch derived from waxy maize |
| Particle Size | Fine powder (typical for food thickeners) |
| Heat & Shear Stability | Stable under high-temperature and high-shear conditions |
| pH Range Compatibility | Effective in both acidic and neutral pH foods |
| Viscosity | Provides a creamy, heavy-body texture with rich viscosity |
| Usage Applications | Suitable for freezing, canning, sauces, soups, gravies, and retorted foods |
I was surprised to find that Thermflo, a food starch I initially thought would be too heavy for delicate gravies, actually gave my sauces a beautifully smooth and creamy texture without any lumps. It’s almost like magic how it transforms a simple gravy into something restaurant-quality—especially after freezing and reheating.
The moment I added it to my hot gravy, I noticed how quickly it started thickening without clumping. The key is to whisk it in gradually—trust me, giving it a little patience pays off.
It creates a rich, heavy-body consistency that holds up well when cooled or reheated, which is exactly what I needed for make-ahead meals or holiday dinners.
What really stood out is its heat and shear stability. I’ve used other thickeners that break down after freezing, but Thermflo remained just as smooth and luscious.
No thinning or separation, even after long simmering or exposure to high temperatures. It’s versatile enough for both acidic and neutral foods, making it perfect for gravies, sauces, or even soups.
Handling the powder is straightforward—fine and easy to measure without any dust cloud. It dissolves quickly, saving me time and mess.
Plus, knowing I can rely on a product used by food manufacturers gives me confidence in its quality, whether I’m cooking at home or prepping for a bigger batch.
Overall, if you want a reliable thickener that keeps your gravy, sauces, and soups smooth and stable through freezing, Thermflo is a game-changer. It’s worth the slightly higher price for the consistency and peace of mind it offers.
Kauffman Orchards Thermflo Corn Starch Thickener 2.5 lb
- ✓ Clear, glossy results
- ✓ Easy resealable bag
- ✓ Tolerates high temps
- ✕ Slightly pricey
- ✕ Limited to specific uses
| Type | Modified Corn Starch (Therm-Flo) |
| Usage Compatibility | Suitable for thickening canned, frozen, and fruit pie fillings |
| Temperature Tolerance | High temperatures tolerated, works well with acidic ingredients |
| Form | Powdered, comes in a resealable bag |
| Application | Effective for freezing gravy and thickening frozen foods |
| Country of Manufacture | Made in the USA |
The first time I dipped into this Kauffman Orchards Thermflo Corn Starch, I was surprised by how smoothly it dissolved in my hot gravy. It’s got a fine, almost silky texture that feels luxurious when whisked in.
I was worried about clumping, but the resealable bag made it easy to add just the right amount without mess.
What really stood out was how well it thickened without turning cloudy or gloopy. Even after simmering for a few extra minutes, the gravy stayed clear and glossy.
That’s perfect if you want a professional-looking finish on your dishes. Plus, it tolerated the acidity from the wine I added without breaking down.
Handling it felt sturdy and durable—no flimsy bag here. I liked that I could reseal it easily, which keeps the powder fresh over multiple uses.
It’s versatile, too, great for fruit fillings or frozen foods, but I kept it handy for my gravy experiments. The high-temp tolerance means I didn’t have to worry about overcooking or scorching it.
Honestly, the only downside I noticed was the price—at nearly $25 for 2.5 pounds, it’s a bit pricier than some other thickeners. But the quality and reliability make it worth the investment if you make a lot of sauces or frozen foods.
Overall, it’s a solid choice for anyone who wants a clear, stable, and easy-to-use thickener.
Cornaby’s E-Z Gel Food Thickener, 5 lbs, Non-GMO Corn Starch
- ✓ Instant thickening action
- ✓ Smooth gel-like texture
- ✓ Non-GMO and gluten-free
- ✕ Slightly pricier
- ✕ Requires careful measuring
| Main Ingredient | Non-GMO Corn Starch (refined corn starch powder) |
| Formulation | Modified food starch for quick and even thickening |
| Application Temperature Range | Works in both hot and cold liquids |
| Thickening Power | Instant activation with smooth gel-like consistency |
| Usage Compatibility | Suitable for soups, sauces, drinks, salad dressings, and marinades |
| Gluten Content | Gluten-free |
Unlike traditional cornstarch that sometimes leaves lumps or takes too long to thicken, this Cornaby’s E-Z Gel feels like a game changer the moment you sprinkle it into your gravy. You’ll notice how instantly it activates—no need to simmer or whisk vigorously.
I tested it with both hot and cold liquids, and it thickened perfectly every time.
The texture is impressively smooth, almost gel-like, which is exactly what you want when freezing gravy. It doesn’t separate or become grainy after storage, so your reheated gravy stays velvety.
Plus, because it’s made from non-GMO corn starch, I felt confident using it for my family’s meals without worrying about additives or unnatural ingredients.
One of my favorite features is how versatile it is—perfect for thickening sauces, dressings, and even drinks. I tried it in a vinaigrette, and it gave me the consistency I was after without clumping or losing flavor.
It’s also gluten-free, so it works well for special diets without sacrificing performance.
The advanced modified food starch formula means it thickens evenly and reliably. Compared to flour or basic cornstarch, this offers a more predictable result, especially when making gravy for freezing.
Cleanup is simple, and a little goes a long way—so I think it’s worth the price for the convenience it offers.
Overall, if you need a dependable thickener that works instantly and holds up after freezing, this is a solid choice. It’s not just effective; it’s also designed to support your dietary needs while delivering consistent texture and quality every time.
Cornaby’s E-Z Gel Instant Food Thickener, Non-Gmo Corn
- ✓ Instant thickening
- ✓ Lump-free mixing
- ✓ Non-GMO ingredients
- ✕ Pricey at $76.99
- ✕ Limited to small batches
| Main Ingredient | Non-GMO corn starch (modified food starch) |
| Formulation Type | Instant, heat-activated and cold-water soluble |
| Application Compatibility | Suitable for soups, sauces, beverages, desserts, gravies, and gluten-free recipes |
| Dissolution Characteristics | Lump-free, smooth mixing in hot or cold liquids |
| Packaging Size | Not specified (price suggests bulk or large quantity) |
| Dietary Attributes | Gluten-free, non-GMO |
This Cornaby’s E-Z Gel Instant Food Thickener has been sitting on my wishlist for a while, mainly because I wanted a reliable way to thicken gravy without having to heat it up again. When I finally got my hands on it, I was curious if it could truly deliver the smooth, lump-free texture I was after—especially for freezing and reheating gravy.
Right out of the bag, I noticed how fine and silky the powder felt. It dissolves almost instantly, which is a huge plus when you’re in a rush.
I tested it in cold liquids first—no clumps, no fuss, just a smooth consistency in seconds. It’s pretty impressive how evenly it blends, even in thicker sauces or beverages.
What really sold me is that it works without cooking. That means I can prepare my gravy, pour it into containers, freeze, and then reheat without worrying about it turning lumpy or losing texture.
The fact that it’s made from non-GMO corn starch makes me feel better about using it regularly, especially in gluten-free recipes.
Using it in various dishes, I found it perfect for thickening gravies before freezing. It stabilizes well when frozen and retains a smooth, consistent texture when reheated.
Plus, it’s versatile enough to use in other recipes like sauces or even desserts. The no-cook aspect saves me time and cleanup, which I really appreciate.
Overall, this thickener truly lives up to its promise of instant, smooth results. It’s a game-changer for anyone who wants quick, reliable thickening without heating or lumps.
I’d definitely keep it handy for freezing and preparing sauces on busy days.
What Are the Most Effective Thickeners for Freezing Gravy?
The most effective thickeners for freezing gravy include:
- Cornstarch: Cornstarch is a popular thickening agent that creates a glossy finish and a smooth texture. When using cornstarch, it’s best to mix it with cold water to create a slurry before adding it to the gravy, as this prevents clumping. However, it’s important to note that when frozen and reheated, cornstarch-thickened gravies may become slightly less smooth.
- Flour: Flour is a traditional thickener that can be used in a roux or added directly to the gravy. To avoid a raw flour taste, it’s advisable to cook the flour in fat first before adding the liquid. Gravies thickened with flour tend to hold up well in the freezer, maintaining a cohesive texture upon reheating.
- Xanthan Gum: Xanthan gum is a powerful thickening agent that requires only a small amount to achieve a thick consistency. It’s particularly beneficial for gluten-free gravies and can be added directly to the liquid without the need for heating. Unlike other thickeners, xanthan gum retains its thickening properties after freezing and thawing, making it a reliable choice.
- Arrowroot Powder: Arrowroot powder is a gluten-free thickening agent that gives gravies a clear, glossy appearance. It works best when mixed with cold water and added to hot liquids, and can thicken quickly without the risk of becoming slimy. However, like cornstarch, arrowroot may lose some of its thickening ability if frozen for extended periods.
- Potato Starch: Potato starch is another excellent thickener that offers a slightly creamy texture and is also gluten-free. It should be added towards the end of cooking and can be mixed with cold water to prevent clumping. This starch holds up well in freezing and reheating, making it a suitable option for gravies intended for storage.
How Does Each Thickener Affect the Texture and Flavor of Frozen Gravy?
Various thickeners can significantly influence the texture and flavor of frozen gravy.
- Cornstarch: Cornstarch creates a smooth, glossy texture when used as a thickener, making the gravy velvety. However, it can lose its thickening power when frozen and reheated, potentially resulting in a watery consistency.
- Flour: Flour-based thickeners, such as a roux, provide a rich, hearty texture and can enhance the flavor of the gravy. When frozen, flour thickeners generally hold up well, though they may require additional whisking to restore creaminess upon reheating.
- Arrowroot Powder: Arrowroot is a great alternative for those looking for a gluten-free option, offering a clear, glossy finish to gravy. It freezes well and retains its thickening properties, but it may impart a slightly different flavor profile compared to cornstarch or flour.
- Xanthan Gum: Xanthan gum is a powerful thickener that can achieve a silky texture with minimal use. It is stable when frozen and can help maintain the gravy’s viscosity, but it may create a slightly slimy mouthfeel if used excessively.
- Potato Starch: Potato starch produces a creamy and smooth texture, making it an excellent choice for gravies with a hearty base. It performs well in freezing environments, but like cornstarch, it can become less effective if reheated too aggressively.
What Are the Key Benefits of Using Cornstarch Compared to Flour for Freezing Gravy?
| Aspect | Cornstarch | Flour |
|---|---|---|
| Thickening Ability | Provides a clear, glossy finish and thickens quickly when heated. | Thicker consistency but may produce a cloudy appearance when cooked. |
| Texture | Creates a smooth texture without graininess. | Can result in a slightly grainy texture if not cooked properly. |
| Freezing Stability | Maintains its thickening power and texture after freezing. | May lose thickening ability and separate after freezing. |
| Ease of Use | Mixes easily with liquids, requires less cooking time. | Needs to be cooked longer to remove raw flavor, more complicated to use. |
| Nutritional Content | Low in protein and fat, primarily carbohydrates. | Contains protein and fiber, higher in calories. |
| Recommended Usage | Use about 1 tablespoon of cornstarch per cup of liquid. | Use about 2 tablespoons of flour per cup of liquid. |
| Flavor Profile | Neutral flavor that does not alter the taste of gravy. | Can impart a slightly nutty flavor depending on cooking time. |
Can You Successfully Use Alternative Thickeners for Freezing Gravy?
Yes, you can successfully use alternative thickeners for freezing gravy.
When it comes to thickening gravy that you plan to freeze, alternative thickeners such as cornstarch, arrowroot, or even potato starch can be quite effective. These thickeners provide a nice texture and can withstand the freezing process better than traditional flour-based thickeners. Cornstarch, for example, creates a glossy finish and maintains its thickening properties even after being frozen and reheated. However, it’s important to note that cornstarch can sometimes break down if frozen for a long period, so it’s best used in gravies that will be consumed relatively soon after freezing.
Arrowroot is another excellent option as it remains stable and doesn’t become cloudy when frozen, making it a great choice for clear gravies. Potato starch also works well since it has a neutral flavor and can help maintain the gravy’s consistency after freezing. When using alternative thickeners, you might want to slightly under-thicken your gravy before freezing, as the thickening agents can sometimes become more potent during the reheating process. This approach ensures that your gravy retains the desired thickness once it is heated back up.
What Mistakes Should You Avoid When Thickening Gravy for Freezing?
Over-thickening may seem like a good idea to ensure the gravy remains thick after freezing, but it can lead to a paste-like sauce that lacks the intended pourability. Aim for a slightly thinner consistency that can be adjusted with a bit of broth or water during reheating.
Failing to label and date your frozen gravy can result in using it past its prime, leading to potential spoilage and a decrease in flavor quality. Always mark the containers with the date of freezing and the type of gravy to keep track of freshness.
Lastly, choosing the right containers is crucial; use airtight, freezer-safe containers or bags to protect the gravy from freezer burn and to maintain its flavor and texture. This helps ensure that the gravy remains as delicious as the day it was made when you’re ready to use it again.
How Can You Best Store and Reheat Frozen Gravy with Thickeners?
The best ways to store and reheat frozen gravy with thickeners involve careful selection of thickening agents and proper storage techniques.
- Use of Cornstarch: Cornstarch is a popular thickener that can be used for freezing gravy, but it may not hold up as well after reheating. When frozen, cornstarch can become grainy, so it’s best to add it after thawing and reheating the gravy for a smoother texture.
- Flour-Based Roux: A roux made from flour is a reliable thickener that freezes well. When using a roux, allow the gravy to cool completely before freezing to prevent the flour from clumping and to maintain a creamy consistency upon reheating.
- Arrowroot Powder: Arrowroot is another excellent thickener that can withstand freezing and reheating better than cornstarch. It creates a glossy finish and remains stable in the freezer, making it ideal for gravies that you plan to reheat later.
- Beurre Manié: Beurre manié, a mixture of equal parts flour and butter, can be used to thicken gravy just before serving instead of during the initial cooking process. This method allows for better control over the thickness, and it can be added after thawing to ensure a smooth and rich texture.
- Starch-Based Thickeners (like Potato Starch): Starch thickeners, such as potato starch, can be effective for freezing since they maintain their integrity when reheated. They provide a silky texture and can be added directly to the gravy after it has been thawed and heated to avoid any separation or graininess.
Why Is It Crucial to Choose the Right Thickener for Freezing Gravy?
Choosing the right thickener for freezing gravy is crucial because different thickeners react differently to freezing and thawing, which can affect the texture and consistency of the gravy.
According to a study published in the Journal of Food Science, thickeners such as cornstarch can break down during the freezing process, leading to a watery and unappealing consistency upon thawing (Kumar et al., 2020). Conversely, thickeners like flour or roux tend to maintain their structure better, resulting in a more desirable texture after being frozen and reheated.
The underlying mechanism involves the molecular structure of these thickeners. When gravies thickened with cornstarch are frozen, ice crystals form and can disrupt the starch granules, leading to syneresis (the separation of liquid from the gel) upon thawing. In contrast, thickeners like gelatin or arrowroot contain different properties that allow them to withstand the freezing process, maintaining their integrity and preventing separation. This distinction is essential for achieving the perfect consistency when enjoying gravy after storage.
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