Heat up a wok/pot with the cooking oil.
Add the minced garlic and chilies, and on low heat, stire till garlic is golden brown.
Add the chicken and when caramelized, add the fish sauce.
When chicken is 80% done, add the basil leaves and give it a quick stir.
Add the sugar if preferred, and adjust according to taste.
Serve with white, steamed rice and a fried egg. Egg must be fried over a high heat with 4 Tbsp of oil. I also like mine with a wedge of lime.