In a pot heat up the oil on medium heat until hot then add the finely diced onions and cook for 4-5 minutes until softened (see note 1)
Add the garlic paste and green chilli paste and sauté for 1-2 minutes
Then add the tomatoes and cook for 3-4 minutes
Add the spices and cook for 2-3 minutes.
Add 2 tbsp of water and cook for 2-3 mins
Once the oil has separated, you can add the split green gram lentils
Mix well and cook for 2-3 minutes,
Then add water, cover and cook on medium heat for 20-25 minutes
When the curry is cooked, garnish with coriander.