Put refined flour, four tablespoons castor sugar, ghee, crushed black peppercorns into a mixingbowl. Mix well and rub till the mixture resembles breadcrumbs. Add sufficient water and knead into semi-stiff dough. Cover and refrigerate for ten minutes.
Put chopped dark chocolate, chocolate sponge, fried nuts, cinnamon powder and brown sugar into another bowl and mix well. Add one teaspoon castor sugar and mix well.
Divide dough into eight equal portions and roll each out into roughly about 5 inch size rotis. Cut the rotis into two equal parts.
Apply water on the edges of each half and roll into a small cone. Place a spoonful of the chocolate mixture in the cone and seal the open edge to make a samosa
Heat sufficient oil in a kadai. Slide in the samosas and deep-fry on low heat till golden and crisp.
Drain on an absorbent paper.
Dip the samosa in dark chocolate and arrange on a serving plate. Drizzle the white chocolate over them to make a pattern and serve hot.