Understanding Flour and Gluten
Flour's protein content is the key factor determining its baking properties. All-purpose (AP) flour contains a moderate protein level, typically ranging from 10–12%, suitable for a variety of recipes. Bread flour has a higher protein percentage (12–14%), which forms a stronger gluten network when mixed with water. This structure helps trap gas from yeast, allowing dough to rise and creating bread with a chewy texture and open crumb.
Vital wheat gluten (VWG) is concentrated wheat protein, a powder that is 75–90% pure protein. Adding it to lower-protein flour like AP increases the protein content, strengthening the dough and improving baking results.
The Correct Ratio for Adding Vital Wheat Gluten
To convert all-purpose flour to a bread-like flour, add 1 to 1.5 teaspoons of vital wheat gluten per cup of all-purpose flour. For chewier crusts, like in bagels, use up to 2 tablespoons per cup.
Thoroughly whisk or sift vital wheat gluten into the dry flour before adding liquids for even distribution. You may need to add slightly more liquid to the recipe, as the extra gluten absorbs more water. Adjust the dough's consistency during mixing as needed.
Practical Applications in Baking
Vital wheat gluten is useful for enhancing whole-grain flours (like whole wheat or rye) because the bran and germ can interfere with gluten development, leading to denser loaves. Adding VWG helps achieve a lighter, fluffier texture and better rise.
Here are some common uses:
- Artisan Breads: Improves chewiness and crumb structure in AP flour loaves.
- Bagels and Pizza Dough: Provides the necessary high-protein elasticity for shaping and chewiness.
- Breads with Heavy Add-ins: Adds structure to support ingredients like nuts or seeds, resulting in a better rise.
All-Purpose vs. DIY Bread Flour with VWG
| Feature | All-Purpose Flour | All-Purpose Flour with Vital Wheat Gluten | Bread Flour (Commercial) |
|---|---|---|---|
| Protein Content | Medium (10-12%) | High (12-14%) | High (12-14%) |
| Ideal For | Most baking, general use | Yeast breads, bagels, chewy crusts | Yeast breads, bagels, chewier crusts |
| Chewiness | Moderate | Increased | High |
| Volume | Good | Enhanced, higher rise | Excellent, high rise |
| Crumb Texture | Soft, tender | Chewy, open | Chewy, open |
| Cost | Least Expensive | Moderate (AP + VWG cost) | Most Expensive |
Potential Pitfalls and Tips
Avoid using too much vital wheat gluten, as it can result in tough or rubbery bread. VWG is a tool to enhance AP flour, not a complete replacement for bread flour's unique properties.
Conclusion
Yes, you can add vital wheat gluten to all-purpose flour to increase its protein content and use it as a bread flour substitute. This improves the rise and chewiness of yeast breads and strengthens whole-grain doughs. Following the correct ratio and mixing method helps achieve great results.
To learn more about using vital wheat gluten in bread baking, check out the resources offered by King Arthur Baking Company.