Potato and coriander patties

Ingredients

• 1/3 cup (65g) dried yellow split peas, rinsed
• 3 large potatoes, chopped
• 1/2 cup (75g) chickpea flour (besan) or plain flour
• 1/3 cup (100g) tikka masala paste
• 2 tablespoons chopped mint
• 2 tablespoons chopped coriander leaves
• 1 tablespoon lemon juice
• 1/4 cup (60ml) vegetable oil
• 3 tomatoes, sliced
• 1 small red onion, sliced
• 1/2 cup mint leaves
• Tamarind sauce
• 1/3 cup (110g) tamarind concentrate
• 1 tablespoon grated palm sugar
• 2 teaspoons grated ginger
• 1 teaspoon ground cumin