Lose eggplant bitterness: Slice eggplant into 1/4 inch slices. Salt each slice and stack. When you have a small tower of eggplant, cover with thin towel and allow to rest for about 1/2 to 1 hour. The bitterness will drain away and you are free to use. I like to just salt and pepper and sprinkle with Wondra flour and saute like green tomatoes.
Thanks!