Peel the eggplants with strips. Remove the stems and seeds of the peppers.
Cut all the vegetables into large chunks.
Place the onion in the cast-iron pot. Put the potatoes on top of the onions, then put the peppers, eggplants, zucchinis, tomatoes, and garlic in order.
Add the tomato and red pepper paste to the pot. Pour the water and sprinkle salt and pepper on top.