Southern Indian Prawn Curry with Sweet and Sour Tomatoes - Eatin' mess

Ingredients

• ¼ cup vege oil
• ½ tsp black mustard seeds
• ½ tsp yellow mustard seeds
• 3 dried long red chillies
• ½ fenugreek seeds
• ½ onion, thinly sliced
• 2 tbs ginger, finely grated
• 2 garlic cloves, chopped
• 30 curry leaves
• 3 tsp ground turmeric
• 1 ripe tomato, coarsely chopped
• 1½ cups coconut cream
• 1 tbs tamarind paste
• 20 raw prawns, peeled and de-veined
• 4 ripe tomatoes
• 1 tsp cumin seeds
• 1 tsp black mustard seeds
• ½ tsp ground turmeric
• 1 tbs ground coriander
• 1½ tsp chilli powder
• 3 tsp white sugar
• ¼ cup white vinegar
• 1 cup basmati rice
• 1 cinnamon stick
• 4 green cardamom pods
• 1 tbs salt