For the stuffing-
Dry roast coriander seeds, anardana and cumin and crush them coarsly.
Peel and mash potatoes roughly,don't make a paste,
Heat oil in a pan and add cumin seeds.When cumin become golden then add ginger,green chilies and boiled peas and saute for 1 minutes.
Now add chili powder,coriander powder,salt and mango powder and stir to mix.
Add mashed potatoes, crushed and roasted powder,garam masala and saute for 2 minutes on medium heat
Take out in a bowl and add fresh chopped coriander.
For the samosa dough-
In a big bowl take refined flour,ajwain and salt and mix it .
Now add cooking oil and rub it well with your fingers.
Add lemon juice and mix again
Now add cold water and make a stiff dough like we make for poori.
Cover the dough and keep aside to rest for 1 -2 hour.
Rub it well to make it smooth.
Make equal size of balls from the dough and keep them covered with a moist muslin cloth.
Roll the ball to make a slightly oval shape poori/disc of medium thickness.
Cut it from the center to make 2 pieces.
Apply water on the sides and fold it like a cone.
Give a fold on the other side of the poori,it helps to retain the shape and stand
Now stuff the cone with the prepared potato mixture till 3/4 .
Now apply water from your fingertip all around the the opening
Press both the sides together to close it completely.
Make all samosas this way and keep aside.
Now heat enough oil in a deep pan.
Add few samosa in the pan and fry on low heat till they become crisp and golden
Drain on a kitchen towel and repeat with the remaining samosas.