Mix together the Seasoning ingredients in a bowl and set aside for now.
Heat the sesame oil in a non stick pan on medium low heat. When it is hot, add the ginger slices and cook until they are lightly browned, about 2-3 minutes. Then add the garlic and cook, stirring, for about 1 minute or until the garlic is nice and fragrant.
Add the spring onion and chilies if using, and cook until the spring onion is wilted and fragrant.
Turn the heat to medium then add the chicken pieces and stir fry until the chicken is no longer pink, about 2-3 minutes. Don't over cook the chicken or it will be dry.
Give the Seasoning a stir then pour into the pan and turn the heat to high and stir to coat the chicken well. Bring to a boil then reduce to low heat and simmer until the sauce thickens, stirring occasionally.
Add the basil to the pan and when wilted, give that a stir into the mixture. Simmer for just a few minutes.
Transfer to a serving dish and garnish with a few drops of sesame oil.
Serve over rice and enjoy.