1 - Heat the oil in a large frying pan over a low-medium heat.

2 - Add the onion and a pinch of salt and cook slowly, stirring occasionally, until softened and just starting to colour.

3 - Add the garlic, ginger and coriander stalks and cook for a further 2 mins, until fragrant.

4 - Add the spices to the pan and cook for another 1 min, by which point everything should smell aromatic.

5 - Tip in the chopped tomatoes and kidney beans in their water, then bring to the boil.