Buttermilk Chicken

Name: Buttermilk Chicken
Prep time: 10 min
Cook time: 1 h 10 min
Total time: 1 h 10 min
Yield: 8 portions
Ingredients: 800 g boneless chicken thighs; 80 g cornflour (starch); 1 ½ tsp salt; 1 tsp white pepper powder; 1 tsp paprika powder; 1 tsp curry powder; ½ tsp garlic powder; 1000 g cooking oil; 2 garlic cloves; 50 g unsalted butter; 5 bird's eye chilli (chilli padi); 2 sprigs curry leaves; 240 g evaporated milk; 200 g water; 1 tsp chicken stock powder; ½ tsp sugar; 2 tbsp water