Ah Ma's Nonya Curry Chicken for the Lee Family

My grandma always gets request to cook her curry chicken when we have family gatherings. None of us knew how she made it so yummy and she always said its simple. After various attempts following her instructions on a bit of this and that, I watched her cook it one day and here it is!

Ingredients
1 Whole chicken, chopped into pieces
1kg potato, peeled, cut into pieces and boiled
5 brown onions+ 2 cloves garlic, blended
2 pandan leaves, tied into a knot
2 stalks lemon grass, trim off the top leaves
3 Kaffir lime leaves
1 packet instant chicken curry mix (A1 brand)
2 bowls of water
1 firm tomato, quartered
200ml coconut milk (fresh or Kara brand)
1 teaspoon white sugar
1 teaspoon salt

Method 
Put pandan leaves, kaffir lime leaves and blended onions into a pot and bring to boil. Remember to stir occasionally
Add curry paste to the pot and bring to boil while stirring. This should be about 10 mins
Add a little water to curry paste packet to get all the paste and add to pot
Add chicken pieces and boil for 2 mins
Add potato, tomatoes and 1/2 cup water and boil for 10mins
Add coconut milk and remaining water Add sugar and salt and bring to boil for 15mins
Taste and adjust salt

Portions of chicken vs curry paste pack:
1 chicken = 1 pack of curry paste
1.5 chicken = 2 pack of curry paste