Step 1 Prepare Yellow Split Peas by soaking overnight. Step 2 Heat the oil in a large pot and add onion and garlic, cooking until onion is tender. Stir in potatoes, ginger, curry powder and cumin, cooking a further minute. Add stock, split peas and lentils, bringing to the boil. Reduce heat and simmer covered for 25 minutes until peas and lentils are tender. Step 3 Add tomatoes to pot and cook for 5 minutes. Stir in spinach just prior to serving. Season well and serve with chilli, yoghurt and coriander.