Being American, I have always loved fried chicken. Korean Fried Chicken, the better KFC, has been gaining wide popularity in its many forms. The difference is in the very thin crisp skin. The spicy sauce can either be drizzled on top or kept on the side. As a kid, I used to just eat the skin off fried chicken-- it's the best part! My version has the thinnest crispiest crust ever.
Make the pre-coating: In a large bowl, whisk together the first 4 ingredients. Add the chicken and toss well until evenly coated in all areas. Transfer the chicken to a rack, shaking the chicken well to get rid of any excess coating. Let rest uncovered for 1 hour.
Make the batter: In a large bowl, whisk together the dry ingredients. In a smaller bowl, whisk together the wet ingredients. Just before frying, whisk the wet mixture into the dry mixture. The consistency should be relatively thin and runny. Working in two batches, dip each piece of chicken into the batter, letting excess batter drip off. Suspend the chicken in the oil for a couple of seconds for it to set before letting it slip completely into the oil, otherwise the chicken will fall and stick to the bottom of the pot. Fry the chicken until golden brown and cooked through, 15 to 20 minutes per batch. Transfer to a wire rack to drain as done.
Make the BBQ sauce: Combine all of the ingredients in a small saucepan and simmer over medium heat until slightly thickened, 3 to 5 minutes. Serve the chicken with the BBQ sauce, pickled radish and beer.