Nico Moretti's Sri Lankan chicken curry with rice

Name: Nico Moretti's Sri Lankan chicken curry with rice
Prep time: 15 min
Cook time: 1 h
Total time: 1 h
Yield: 4 portions
Ingredients: 2 tsp basmati rice; 1 tbsp coriander seeds; 3 tsp cumin seeds; 2 tsp black peppercorns; 1 tsp black mustard seeds; ¾ tsp whole cloves; ½ tsp green cardamom pods; ¼ tsp fennel seeds; 2 cm cinnamon quill; 1 tsp ground paprika; 1 tsp chilli powder; 300 g basmati rice; 3 ½ tsp sea salt; 40 g vegetable oil; 800 g skinless, boneless chicken thighs; 40 g tamarind paste; 340 g water; 2 tsp ground turmeric; 100 g brown onion; 2 garlic cloves; 20 g fresh ginger; 4 fresh long green chillies; 4 green cardamom pods; 4 whole cloves; 5 cm cinnamon quill; 15 - 20 fresh curry leaves; 1 pandan leaf; 3 tsp ground sweet paprika; 1 ½ tsp Kashmiri chilli powder; 200 g fresh tomatoes