Peel and cut mangoes into long strips.
Now add 1 tsp turmeric powder and 1 tsp salt. mix well.
Cover and keep it aside for 2 hrs.
Remove turmeric and salt water from mango pieces and dry them for 1 hrs.
Then in a bowl, add black pepper powder, roasted cumin powder, black salt, red chili powder, a pinch of salt, and powdered sugar. Mix well.
When mango pieces are slightly dry, coat with masala and mix well.
Then immediately masala coated mango pieces spread on a plate and dry for 2 days till it is slightly crispy and the water is evaporated.
Store it in an air-tight container for months.