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.
Filling
Heat oil in a non-stick pan on a medium heat. Add cumin and poppy seeds.
When they splutter, add onions, ginger-garlic- green chili paste and cook till the onions are transluscent.
Add carrots and cook till soft. Now add corn and peas.
Sprinkle in the coriander powder, garam masala and dry mango powder. Stir well for a couple of minutes.
Add raisins and cook for 3-4 minutes. Season with salt. Keep aside to cool.
Assembly and Frying
Divide the dough into equal portions. Roll into a disc and cut at the center to make two halves Shape the dough into cones and stuff the mixture in them. Brush plain water around the top edge and seal shut.