To begin, make the coating for the chicken. Add the cornflour, salt, baking powder and a liberal amount of pepper to a large bowl. Stir together to combine
Add the chicken and toss around so that everything is nicely coated. Transfer to a wire rack, shaking off any excess, and leave uncovered at room temperature for approximately 1 hour
Just before you're ready to cook the chicken, whisk the wet ingredients into the dry ingredient – do not do this too far in advance as the batter will thicken too much. The consistency should be relatively thin and runny
Now cook the chicken in 2 batches – the thighs and legs in one and the wings in another. Dip each chicken piece in the batter and allow any excess to drip off. Suspend the chicken in the oil for a couple of seconds to allow a crust to form, then allow it to slip completely into the oil (otherwise it will stick to the base of the pan)
Fry the chicken for 15–20 minutes, flipping halfway through, until nicely golden brown, crispy and cooked through
Ultimate KFC (Korean Fried Chicken)