Peel the skin of potatoes and make its thin slices with help of a wafer slicer.
Make a pile of slices and cut them into long and thin strips.
Wash potato strips with water to remove their starch. Then squeeze water from strips and add it into the mixing bowl.
Now, add 2 sliced onions, chopped green chilli, ginger, chopped garlic, coriander leaves, red chilli powder, coriander powder, ajwain, amchur powder, garam masala, lemon juice, black salt, and salt. Mix it well using your hand, rub with your fingers so flour and spices are coated to potatoes.
Mix well with your hand and rest it for 2-3 minutes.
Now add besan, rice flour, and hot oil. Mix well.
If potato laccha easily bind together in your hand, the proportion of flour should be perfect.
Now greases hands with water, pinch balls sized hand and make a round shape.
Deep fry in hot oil keeping the flame on medium.
Stir occasionally, and fry on medium flame until the pakoda turns golden brown and crisp.
Drain off and aloo laccha pakora is ready to serve.