Batter

1. Combine the flour and cornstarch in a large bowl
2. Add the water and whisk until smooth
3. Add the marinated chicken and stir until completely coated
4. Set aside and heat the oil

Chicken

1. Heat the oil over high heat in a wok or pot until it reaches 180C/350F
2. Add the chicken and fry for 10 minutes, or until cooked through and golden brown
3. Strain the chicken from the oil and set aside
4. Set the left over oil aside to be used next time you deep-fry

Sauce

1. Combine the honey, water, custard powder, sugar, salt and yumyum together in the empty wok or pot
2. Heat over high heat until bubbling and slightly thickened
3. Add the chicken and toss until combined
4. Serve on a plate with fried vermicelli (optional) and sprinkle with sesame seeds
5. Enjoy with a side of rice