1 Flatten the chicken breasts and cut them in half.
2 Mix together all the marinade ingredients.
3 Marinade the chicken for at least 2 hours, ideally overnight.
4 In a saucepan, mix together all the ingredients for the sauce without heating, then bring to the boil while whisking.
5 Flour the marinaded chicken, then dip in the beaten egg. Then fry in oil at 170℃ for 5 to 6 minutes.
6 Brown the buns in a frying pan.
7 Place the chicken on one half of the buns, add the sauce and the mayonnaise.
8 Place the lettuce and the other half of the bun on top.
9 Serve immediately.
INGREDIENTS (FOR 4)