Cold fat is crucial in kachori dough because it prevents gluten development, resulting in a flaky and melt-in-your-mouth texture. The cold temperature ensures the fat remains solid and creates layers within the dough.
The key to a perfect kachori lies in its flaky and crispy exterior. This texture is achieved by inhibiting gluten formation in the dough. Gluten is a protein that develops when flour is mixed with water, leading to a chewy texture. By using cold fat, typically ghee or oil, we can prevent excessive gluten development.
Here's how it works:
Fat Shortens Gluten Strands: Cold fat coats the flour particles, physically preventing them from fully hydrating and forming long, elastic gluten strands.
Creates Layers: As the dough bakes or fries, the water content in the dough turns to steam. This steam is trapped between the layers of fat and flour, causing the dough to puff up and create distinct, flaky layers.
Melting Point: The cold fat melts during cooking, leaving behind air pockets that contribute to the light and airy texture of the kachori.
If the fat is warm or melted, it will incorporate too readily into the flour, leading to gluten development and a tough, less desirable kachori.
Chill the dough for at least 30 minutes before rolling and frying. This allows the fat to solidify further, ensuring maximum flakiness and preventing the kachoris from becoming greasy during frying.