Cover with a damp towel and allow the dough to rest for at least 30 minutes so it can relax.
Once rested, divide the dough into 8 equal balls of about 90 grams each. Working with one ball at a time leaving the remaining covered to prevent drying.
On a clean working space without any flour flatten the dough ball with the palm of you hand to create a flat circle. Doing this step helps spread the dough out evenly and helps form a circle easily.
Using a rolling pin, roll each piece into a wide oval shape that is approximately 6 inches by 5 inches and ¼ inch thick.
Cut each oval in half widthwise to create two semi circles. Take one semi-circle and place the other aside.
Take the wider side of the semi circle or side that was cut further away from you keeping the circular side closer to you. Bring the upper left corner and the upper right corner to the center of the semicircle so the two sides slightly overlap. Place your thumb under the seal to make sure it doesn't stick to the bottom of the dough and instead forms a cone. Gently seal the two ends using a pinching motion with your fingers.
Create a "C" shape with your left hand which will be the resting spot for the samosa cone. Hold the cone open towards the top top to create a large pocket on the bottom.
Add 2 tablespoons of filling to the cone of the samosa.
Lightly tug and stretch the side of the samosa dough that is opposite to the seal side.
Create a pleat by folding the dough it onto itself. This pleat helps the samosa stand up right.
Lightly dampen your finger with water and run it across the circular perimeter on top of the samosa cone. Bring the pleat side to the seal side and pinch to enclose all the stuffing in the center and create a small skirt where the two sides are sealed. The skirt of the samosa should flare out towards the initial seal of the samosa.
Heat a deep, heavy bottomed pot with at least 3 inches of oil to 325F. Do not allow the oil to become too hot, as samosas require a lower temperature to cook thoroughly and become crisp. Fry for 10-12 minutes or until the samosas are a light golden color, then place them on a wire rack. If the samosas take on color before that time period, it is an indicator that the oil is too hot. If the samosas aren't golden after ~10 minutes, increase the temperature to 350F to get the desired golden color. Move samosas to a wired rack or a paper towel lined plate to cool.Sprinkle a pinch of chaat masala on top of the samosas while still warm.