How to Make a Cake Flour Substitute: Easy DIY Baking Tips
Discover a quick, reliable method to substitute cake flour using pantry staples and achieve perfectly tender cakes every time.
How to Easily Make a Cake Flour Substitute
Bakers often reach for cake flour when aiming for soft, tender, and finely textured cakes. But what if you’re mid-recipe and discover you’re out of this specialty flour? Fortunately, there’s a simple solution using ingredients likely already in your pantry. This guide explains what cake flour is, why it matters, and gives you a foolproof method to make a quick substitute, with added tips for perfect results.
What is Cake Flour?
Cake flour is a finely milled, low-protein flour (typically around 7–8% protein) specially formulated to create cakes with an ultra-light, soft crumb and a delicate texture. Its low protein content means less gluten is formed during mixing, resulting in baked goods that are exceptionally tender and less chewy compared to those made with higher-protein flours like all-purpose flour (which generally has 10–12% protein) .
- Appearance: Soft, powdery, and bright white in color.
- Applications: Best suited for angel food cake, chiffon cake, sponge cakes, cupcakes, and other baked goods where a tender crumb is desired .
Why Use Cake Flour vs. All-Purpose Flour?
The distinction between cake flour and all-purpose flour lies primarily in the protein content and how it affects texture:
- Cake flour: Leads to a lighter, finer, and more delicate crumb in cakes and helps prevent toughness .
- All-purpose flour: Yields a sturdier cake with a more open, slightly coarser crumb; can result in less tender cakes if used as a direct substitute for cake flour .
In recipes specifically designed for cake flour, using all-purpose flour can noticeably change texture, though the final product will still generally be tasty . Many classic cakes (such as angel food or chiffon) rely on cake flour for their signature lightness.
When to Substitute (and When Not To)
- Substitute all-purpose flour + cornstarch for cake flour when a recipe calls explicitly for cake flour, and you don’t have any on hand .
- Do not substitute cake flour for all-purpose flour in reverse, especially in recipes for sturdy breads, cookies, or bars, as these require more structure and gluten than cake flour provides .
- For recipes specifically engineered for cake flour (such as angel food cake), using the substitute is effective, but purists may note the real thing creates the finest crumb .
Step-by-Step: How to Make a Cake Flour Substitute
This easy DIY technique delivers a nearly identical replacement for commercial cake flour. All you need are standard all-purpose flour and cornstarch:
Ingredients
- 1 cup (120g) all-purpose flour
- 2 tablespoons (16g) cornstarch
Instructions
- Measure 1 cup of all-purpose flour.
- Remove 2 tablespoons of the flour and return it to your canister.
- Add 2 tablespoons of cornstarch to the flour remaining in your measuring cup .
- Whisk the mixture together thoroughly. For an extra-light texture, sift this mixture 2–5 times to fully aerate and blend the starch .
This combination reduces overall protein content, closely mimicking the effect of cake flour. Substitute this blend in recipes in a 1:1 ratio by volume or weight for cake flour.
Recipe Table: Cake Flour Substitute Measurements
| Cake Flour Needed | All-Purpose Flour | Cornstarch |
|---|---|---|
| 1 cup (120g) | 1 cup minus 2 tbsp (105g) | 2 tbsp (15–16g) |
| 2 cups (240g) | 2 cups minus 4 tbsp (210g) | 4 tbsp (30–32g) |
| 100g | 85g | 15g |
Tips for Success
- Sift, don’t skip! Sifting aerates the flour and ensures the cornstarch is evenly distributed, creating the softest texture .
- Always measure flour by spooning into the cup and leveling off for the most accurate results. For even greater consistency, use a kitchen scale.
- Blend only as much substitute as you need for your recipe to ensure maximum freshness and effectiveness.
Frequently Asked Questions (FAQs)
Q: Why add cornstarch to all-purpose flour?
A: Cornstarch is nearly pure starch and lacks protein, so it dilutes the overall protein content when mixed with all-purpose flour. This mimics cake flour’s low-gluten properties, creating a softer, more tender cake crumb .
Q: Can I use the substitute in any cake recipe?
A: Yes, use this blend cup-for-cup in place of cake flour in recipes that call for it. For extra sensitive recipes (like angel food cakes), the difference is subtle, but the substitute is almost always effective .
Q: What is the protein content of cake flour compared to all-purpose flour?
A: Cake flour generally contains around 7–8% protein, while all-purpose flour ranges from 10–12%. Lower protein leads to softer, lighter textures in cakes .
Q: Is cake flour always bleached and does this matter?
A: Many commercial cake flours are bleached, helping the starch granules absorb liquid and fat more efficiently, resulting in a whiter, softer crumb. However, unbleached cake flours and substitutes still work well, especially in home baking .
Q: Should I substitute cake flour for all-purpose flour in cookies or breads?
A: Generally not. Cake flour lacks the structure needed for chewier baked goods and can result in cookies or breads that are too delicate or crumbly . Follow the recipe’s suggested flour type for best results.
Q: How should I store homemade cake flour substitute?
A: Store any unused substitute in an airtight container in a cool, dry place. Use it within several months for best quality, though it keeps well for up to a year due to its refined nature .
Best Uses for Cake Flour (and Substitutes)
- Angel food cake
- Chiffon cake
- Sponge cakes
- Classic layer cakes
- Light cupcakes
- Delicate coffee cakes
For recipes developed for cake flour, such as tender white cake, ultra-light chiffon cakes, and cloud-like cupcakes, using the real thing or this substitute is recommended for the softest possible results .
Expert Pro Tips for the Perfect Cake Crumb
- Resist overmixing! Minimal mixing preserves the delicate crumb by preventing excess gluten formation.
- Accuracy counts. For the best cakes, measure by weight whenever possible (for example, 100g cake flour ≈ 85g all-purpose flour + 15g cornstarch) .
- Sift your homemade cake flour substitute multiple times for optimal aeration and integration.
- If storing cake flour or substitutes, keep them in an airtight, dry environment to avoid clumping or spoilage .
Final Thoughts: Cake Flour and Its DIY Alternative
Though nothing rivals the exact performance of true cake flour, this DIY substitute is a reliable, effective solution in almost every recipe. When added with care, it delivers cakes and cupcakes with a crumb that’s distinguishably lighter and more tender than those made with all-purpose flour alone.
Remember: for the most critical recipes built specifically for cake flour, such as angel food or chiffon cakes, the real thing may offer marginal improvements. But for most home bakers, the convenience and quality of a well-made substitute means you’re never far from bakery-quality, cloud-soft cakes—no special shopping trip required.
More FAQs
Q: How long does homemade cake flour substitute keep?
A: When stored in a tightly sealed container in a cool, dry pantry, your substitute should maintain quality for up to six months or more.
Q: My cakes are still dense. What else can I do?
A: Ensure you’re sifting well, measuring accurately, and avoid overmixing. If your cakes remain dense, check that your baking powder or baking soda is fresh and that you’re not overbaking.
Q: Can I use potato starch or arrowroot powder instead of cornstarch?
A: Cornstarch is preferred for its very fine texture and neutral flavor, but potato starch or arrowroot can be substituted in equal measure for similar effects if necessary.
References
- King Arthur Baking: Cake Flour vs. All-Purpose Flour (2023)
- Joy the Baker: The Best Cake Flour Substitute
- Food52: How to DIY Cake Flour and Self-Rising Flour
- Handle the Heat: Cake Flour 101
