Onion with potato curry

Ingredients:
1 Tablespoon Vegetable Oil
1/4 Teaspoon Mustard
1/4 Teaspoon cumin seeds
1/4 Teaspoon Urad dal (split and skinned White Lentils)
1/4 Teaspoon Channa dal
3 Medium sized Onion cut lengthwise
2-3 Green Chilly finely chopped or cut length wise
1 Teaspoon Turmeric Powder
2 Medium sized Potatoes
1 Cup Water
2 Tbsp Besan (chickpea flour)
2 Tbsp grated carrot
1 Teaspoon finely chopped ginger
1/2 cup water
6 to 7 Curry leaves
Salt to taste
Recipe:
1. Heat oil in a pan and add the mustards, cumin seeds, urad dal (white lentils)
and channa dal. After the mustard splutters, add the onions, curry leaves, carrot, potatoes chopped into small cubes, chilly and grated ginger.
2. Now add the turmeric powder and salt.
3. Saute them till the onions turn light brownish and soft.
4. Dissolve the Chick pea powder (besan) in 1/2 cup water. Beat it without any lumps in it.
5. Add this batter to the onions and stir it for 2 mins.
6. Simmer for abt. 5-10 minutes.
7. Garnish with coriander leaves.