Pressure cook the potato for 3 whistles. Peel the skin and cut into cubes. Soak the cauliflower florets in boiling water until just tender. Drain and set aside.
In a kadai, add 1 tsp oil and add bayleaf, cinnamon, onion, garlic, ginger and fry till they become just soft. Once cool, add tomatoes and grind to a smooth paste.
In the kadai, add oil and add jeera. When it sizzles, add the ground onion-tomato paste. Cover and cook for 12-15 minutes or till it has become a thick paste.
Once oil starts to leave the sides, add turmeric powder, coriander powder, red chilly powder, garam masala, kasuri methi and salt.
Fry till the raw smell of the masala goes. Add 1½ - 2 cup water and bring to boil. Add potato, cauliflower florets, green peas, sugar and mix well.
Cover and cook for 5-6 minutes in low heat or until all vegetables are fully cooked. Add coriander leaves and cook for another 1-2 minutes.