Lahori chanay ki daal

Name: Lahori chanay ki daal
Prep time: 10 min
Cook time: 45 min
Total time: 55 min
Cuisine: Indian
Ingredients: 350g chana daal; 4 tbsp sunflower oil; 1 tbsp ghee (or unsalted butter); 1 tsp whole cumin seeds; 1 black cardamom (optional); 1 red onion finely chopped; 2 garlic cloves finely chopped; 1⁄2in piece of ginger peeled; 4 tbsp tomato purée; 1⁄2 tsp ground turmeric; 1⁄2 red chilli powder or Kashmiri chilli powder; 1 tbsp kasuri methi (dried fenugreek) (optional); 1 green chilli finely chopped; small bunch of coriander leaves chopped; 1⁄2in piece of ginger peeled and julienned; 1 tsp chaat masala (optional)