Potato masala

Ingredients

1. Potato - 3 medium sized
2. Onion - 1 medium sized
3. Green chillies - 2
4. Ginger - 1 inch
5. Carrot - 1 (optional)
6. Peas - 1/3 cup (optional)
7. Tomato - 1 medium
8. Water - 2 cups + more if required
9. Mustard - 1 tsp
10. Oil - 1 tsp
11. Red chilli - 1
12. Curry leaves - 1 twig
13. Coriander leaves - bunch

Procedure

1. Add potato into a pressure cooker and add enough water to cover the potatoes
2. Cook the potatoes for 6 -8 whistles
3. Peel the potatoes and mash them roughly. Do not mash too much. 
4. Cut onion and green chillies in small pieces
5. Grate carrot if using
6. Cut tomato into small pieces
7. Cut ginger into small pieces
8. In a dry kadai / vessel, add oil and heat it.
9. Add mustard when the oil is hot. 
10. After the mustard has spluttered, add curry leaves and red chilli
11. Into this add onion, ginger and green chillies
12. When the onion has become soft, add other vegetables if using. Cover and cook for 3 minutes
13. Once the vegetables are cooked, add tomato
14. Once the tomato is cooked, add salt
15. Add the mashed potato and water 
16. Wait till the curry gets to the required consistency. Check salt and add if required.
17. Add coriander leaves on top of the curry.
18. This can be served with poori, chappathi, idli

Note: 

1. Instead of green chillies, 1 tbsp of red chilli powder and 1 tbsp of coriander powder can be used.