In a large bowl mix all the batter ingredients together until smooth; cover and let the batter rest for at least 30 minutes.
Preheat deep fryer to 350F.
Add the chicken to the batter tossing to coat.
Deep fry chicken in batches until golden brown and batter become firm. Place on paper toweling to drain.
For the sauce heat 1½ tablespoon of oil in a medium-size saucepan. Add the garlic and ginger and cook until fragrant (about 30 seconds). Mix in the water, salt, honey, and vinegar until well to combine. Mix together 1 teaspoon of cornstarch with 1 teaspoon of water until cornstarch is dissolved. Add the mixture to the sauce and cook for two minutes or until sauce is thickened.
Coat chicken with the sauce and garnish with sesame seeds.