Step 1

Heat the vegetable oil in a pan and add the onion and a pinch of salt. Fry for 5 minutes until the onion is soft. Add the garlic and ginger paste, and red chilli, and fry 1 minute before adding the turmeric. Stir in the lentils. Pour in the stock and simmer for 20 minutes until the lentils start to break down. Stir through the garam masala and lemon juice.

Step 2

To make the tarka, heat a wok or frying pan and add the broccoli with 100ml of water. Cook on a high heat until the water has evaporated. Add the vegetable oil and then the mustard seeds, cumin, coriander and chilli. Fry for 4-5 minutes until the broccoli is charred but still has a crunch.

Step 3

Divide the soup between 4 bowls and top with the broccoli.