First, peel the bottle gourd and potatoes, leaving a bit of the flesh on the skin. Use the main parts of the vegetables for another recipe. Then, cut the peel pieces into long, thin strips. Wash these strips thoroughly under running water two or three times.
Next, heat mustard oil in a pan.
Add dried red chilies, whole poppy seeds, and nigella seeds to the hot oil for a wonderful aroma.
Now, toss in the peel strips, along with salt and sugar.
Mix everything well. Add a few slit green chilies for some extra heat.
Cover the pan and cook over medium heat for about 10 minutes, stirring occasionally.
Once the peels are tender, turn off the heat and transfer the stir-fry to a bowl.
Serve this tasty Khosha Bhaja with hot steamed rice and dal for a complete and satisfying meal.