A samosa is a fried South Asian pastry. samosa is prepared with all-purpose flour and stuffed with a filling, often a mixture of diced and mashed boiled potato. The samosa is prepared with an all-purpose flour (locally known as maida) and stuffed with a filling, often a mixture of diced and cooked or mashed boiled potato (preferably diced), onions, green peas, lentils, ginger, spices and green chili.Travel, India, Food,