In a bowl mix all-purpose flour and salt. Add oil and mix until it is well incorporated into the flour. Add water and knead into smooth firm dough. Wrap in plastic wrap and let it rest for 20 minutes.

Heat oil in a medium non-stick pan on a medium heat. Saute onions in it and cook until they turn slightly brown.

Add shrimp and cook until they turn pink.

Add red chili powder, turmeric and garam masala. Stir well.

Add salt and lemon juice. Cook for few more minutes. Garnish with cilantro. Keep aside to cool to room temperature.

Divide the dough into 2 small portions. Roll into a disc and cut at the center to make two halfs and apply water on the edges. Shape the dough into cones and stuff the shrimp mixture into the cone. Brush plain water around the top edge and seal shut.

Heat oil in a fryer. Once the oil is hot, turn down the heat and then gently slide in the samosa. Fry till golden brown on all the sides. Once done, lift it from the oil and drain on paper towel and serve immediately.