Seive whole wheat flour, baking soda and salt in a mixing bowl.

Add oil & rub the oil with your fingertips to get a breadcrumb like consistency.

Now start kneading the flour to a stiff dought with water.

Cover the dough with a moistened muslin clothe or kitchen towel and keep aside for 30-40 mins.

Add rest of the ingredients and throughly mix them, preferably with your hand.

Take some potato mixture and make a small ball out of it with the help of your palms. Keep aside after making all the balls.

When the rest time of dough is over, knead the dough lightly again.

Now take a small piece of dough & roll it on your palms and place it on a rolling board.

Roll the ball with a rolling pin like you do for making chapatis,keeping the thickness neither thin nor thick.

Then place the ball of potato mixture, you have already prepared, in the middle of rolled chapati.

Beginning from one side, hold the chapati from two spots (gap between both the spots should be about 1.5 to 2 inches) & stick both the spots.

Likewise repeat the same from opposite side.

Then lift the stuck spots from both the sides & stick again with each other crossing over the potato ball placed in between. This way, you have completed half of the star shape.

Now moving on to rest of the 2 sides which are still fallen flat.

Hold the absolute center spot of both the flat sides with the help of your finger tips, lift and join them too with the already lifted & spots, already stuck earlier. Your star shape is completed.

Be sure there are no cracks & the edges & all the open sides should be joined very well. Apply water with your finger tip where you are countering problem in joining the ends.

Now take a kitchen scissor and cut the star shape from all the 4 corners, leaving the center intact.

Fold all the 4 cut strips downwards & pinch the lower portion, which are exactly under the folded strips, giving it a pointed shape.

When all your samosas are ready, arrange them in the greased baking tray and brush them with a little oil.

Place the tray in a pre-heated oven** at 180 degrees celsius for 30 to 35 minutes, till the crust is golden and crisp. Do keep in mind that oven temperatures vary so keep a check.