Lamb kuttu roti

Name: Lamb kuttu roti
Ingredients: 1 black cardamom pod; 1 tsp fenugreek seeds; 1 tsp cumin seeds; 1 tsp coriander seeds; 4 curry leaves; thumb-sized piece ginger, grated; 1 garlic clove; 1 tbsp groundnut oil; 2 rotis, torn into small pieces; 1 green chilli, finely sliced; 1 carrot, peeled and sliced into thin strips; ¼ white cabbage, shredded; 250g leftover lamb shoulder; 2 eggs, lightly whisked; 3 spring onions, finely sliced; small bunch coriander, to serve; lime wedges, to serve; 200ml coconut milk; 1 tsp curry powder; 1 tbsp soy sauce; 1 tbsp tomato purée