Cut chicken into bite-sized pieces.
Put chicken in a large ziplock bag add all the ingredients of and mix them very well. Leave it for at least 10 minutes to over night.
Drain the sauce by using the strainer.
In a ziplock bag, add potato starch and flour together and add the marinated chicken.
In a large pan, heat 2 inches of oil to 180C. Cook the chicken until golden brown, 6 minutes. You might want to cook them in 2 batches. You can also tell if its done or not by holding a piece of chicken while still in the oil with your chopsticks. If the chicken is not vibrating, its done.
Zest lemon and sprinkle it all over the cooked chicken. Squeeze lemon juice if you prefer. Dip in Japanese mayonnaise if you prefer.
