Oh really? which series?
Traditional liutenitsa is with roasted eggplants & peppers (prefferably on fire) and then cooked with tomato sauce, oil, salt, sugar... slowly on fire again...
It was kind of a ritual when we we kids to sit around and taste it first on a big chunck of bread :D
Then the variations go wide again.. with adding carrots, different spices and on of my grannies even put apples for making it sweeter, instead of adding sugar :)