Peel the eggplant and soak it in salt water for 10 minutes. While waiting, wash and clean the other vegetables and chop them as you wish. Put the oil, chopped onion and minced meat in a pot and fry them lightly over medium heat, add the chopped peppers and tomatoes and fry a little more. Then mix all the vegetables together, add salt and a glass of water and cook until the vegetables soften.