Healthy Bitter Gourd and Potato Fry Recipe

Bitter Gourd (karela) – 750 gm
   Onion – 1 large
   Potato – 3 medium
   Mustard seeds – 1 tsp
   Salt to taste
   Turmeric powder – 1 tsp
   Coriander powder – 1 tbsp
   Garam masala powder – 1 tsp
   Red chilli powder – 1 tsp
   Raw mango powder – 2 tsp
   Desi ghee/oil – 3-4 tbsp