Biryani With Goat Meat

Name: Biryani With Goat Meat
Ingredients: 2 1/4 lbs./1 kg goat meat (use leg and get the butcher to cut it into bite-sized chunks); 2 tbsp. garlic paste; 2 tbsp. ginger paste; 6 tbsp. sunflower, canola, or vegetable oil (divided); 2 large red onions (chopped fine); 30 to 40 curry leaves; Optional: 2 green chilies; 2 tbsp. coriander powder; 1 tbsp. cumin powder; 1/2 tsp. turmeric powder; 1 tbsp. garam masala; Salt to taste; 2 cups hot water (divided); 1 3/4 oz./50 g ball of tamarind; 3 cups/700 g basmati rice; Garnish: 2 large onions (sliced thin); Optional: 2 drops orange food coloring (to make the biryani look very pretty); Optional: 2 drops green food coloring