Karela (Bitter Gourd) peels : side dish

We almost always throw away peels of vegetables, not knowing what to do with them.
Well here is my first post on the series .  If you like bitter gourd then you would love this dish.

Ingredients :
Karela skin                  1 cup
Potato.                       1 large boiled .
Mustard Oil.                 2 -3 tbsp
Mustard seeds               1/2 tsp
Fennel seeds.               1/4 tsp
Onions.                        1/2 cup finely chopped
Red chilly pd.               1 tsp
Turmeric pd.                1/2 tsp
Coriander pd.               1 tsp
Fennel pd.                    2 tsp
Raw mango.                  2 tbsp grated
Salt.                             To taste
Sugar.                           1+  1 1/2 tsp

Method:

1. Rub salt on peels and let them sit for 15 min.
2. Boil them for 2-3 min.
3. Drain and mix 1 tsp of sugar and set it aside to cool.
4. Once cool squeeze to remove excess water.
5. Heat oil in a pan and crackle mustard seeds .
6. Add fennel seeds , once golden add onions. Fry till slightly brown.
7. Add potato cubes . Fry for a couple of minutes .
8. Now add peels and fry till slightly crisp.
9. Add all spices, sugar, salt and raw mango. Give it a good stir and fry for 2 more min.
10. Remove from gas.
11. Taste and adjust salt.
12. Add more sugar if its too bitter for your taste but remember it will be slightly bitter.
13. Serve with dal rice.

** you can use any vegetable oil if you don't like the flavour of mustard oil.