Chole

Name: Chole
Ingredients: 0.75 Cup kabuli chana (white chick peas); 0.5 teaspoon baking soda; 3 teaspoon oil; 0.5 Cup boiled and peeled potato cubes; 0.75 Cup chopped onions; 2.0 teaspoon coriander-cumin seeds; 1 teaspoon chilli powder; 1 teaspoon garam masala; 1 teaspoon dried mango powder (amchur); 2 teaspoon lemon juice; 0.25 teaspoon freshly ground black pepper (kalimirch); 0.5 Cup tomato cubes; Salt to taste