Pound Ginger, Green Chilli, Shallots and Garlic with a pestle and mortar (or blend them).
Saute the pounded ingredients in Coconut Oil on medium heat.
After 3-4 minutes, add Turmeric Powder and the bruised Lemongrass, and saute once more.
Add Chicken and mix well.
Pour Coconut Milk and Water and mix well once more. Add Salt and simmer while covered for about 20 minutes or until sauce thickens and chicken is cooked through.