Over-kneading chapati dough results in tough, elastic chapatis that are difficult to roll out and may shrink back after rolling. The gluten develops too much, leading to a less tender final product.
Kneading chapati dough develops the gluten in the flour. Gluten is a protein that provides structure and elasticity to the dough. When kneading, you're essentially aligning and strengthening these gluten strands. While some gluten development is necessary for chapati dough to hold its shape and trap steam during cooking, over-kneading leads to excessive gluten development. This makes the dough overly elastic and resistant to stretching.Here's a breakdown of what happens when you over-knead:1. **Excessive Gluten Development:** The gluten strands become too strong and tightly interwoven.2. **Tough Dough:** The dough becomes difficult to roll out thinly and evenly. It will feel very tight and springy.3. **Shrinkage:** After rolling, the dough may shrink back towards its original size due to the strong gluten network trying to contract.4. **Tough Chapatis:** The resulting chapatis will be chewier and less tender than desired. They may also be harder to puff up properly on the tawa (griddle).The ideal kneading time for chapati dough is typically around 5-7 minutes. You're looking for a smooth, pliable dough that is soft and elastic, but not overly tight.
If you suspect you've over-kneaded your chapati dough, let it rest for at least 30 minutes before rolling. This allows the gluten to relax slightly, making the dough easier to work with.