Chole "bill And Jim" [chick Peas]

• 3 pods cardamom
• 2 potatoes
• 1 onion (chopped finely)
• 60 ml water
• 16 ml garam masala vegetable oil
• 5 ml mustard seeds
• 2 gr coriander
• 2 gr cumin seeds
• 1 package chick peas
• some serve