The key to a flaky samosa crust is using cold ingredients, especially cold fat (ghee or oil), and avoiding overmixing the dough to prevent gluten development.
Achieving a perfectly flaky samosa crust relies on a few crucial techniques. First, the fat used in the dough, typically ghee or oil, must be very cold. Cold fat remains in small, solid pieces within the dough. As the samosa bakes, this fat melts, creating steam that separates the layers of dough, resulting in flakiness.
Second, avoid overmixing the dough. Overmixing develops gluten, which leads to a tough, rather than flaky, crust. Mix the dough just until it comes together, and then let it rest. Resting allows the gluten to relax, further contributing to a tender and flaky texture.
Finally, using the right ratio of fat to flour is essential. Too little fat will result in a dry crust, while too much can make the crust greasy. A good starting point is about 1/3 to 1/2 cup of fat per 2 cups of flour, adjusting to achieve a sandy, crumbly texture before adding water.
Use ice water when bringing the dough together. The cold water helps keep the fat solid and prevents gluten development, contributing to a flakier crust.