Cold fat is crucial in kachori dough because it prevents gluten development, resulting in a flaky and crispy texture. The cold temperature ensures the fat remains solid and creates layers during baking or frying.
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 develops when flour is mixed with water, creating a stretchy and elastic dough. To prevent this, cold fat, typically ghee or oil, is incorporated into the flour.
When cold fat is mixed with flour, it coats the flour particles, preventing them from readily absorbing water. This limits gluten development. As the kachoris are fried or baked, the fat melts, leaving behind air pockets. These air pockets create distinct layers, resulting in the desired flakiness. The cold temperature of the fat is essential because it ensures the fat remains solid during the initial mixing process, maximizing its ability to coat the flour and prevent gluten formation. If the fat were warm or melted, it would blend too easily with the flour and water, leading to a tougher, less flaky kachori.
Use a pastry blender or your fingertips to cut the cold fat into the flour. Avoid overmixing, as this can warm the fat and develop gluten. The mixture should resemble coarse breadcrumbs before adding any liquid.