Karela onion fry is a delicious and healthy Indian side dish made with bitter gourd (karela) and onions. The bitterness of the karela is balanced with the sweetness of the onions and the flavors of spices. The dish is stir-fried until the karela and onions are cooked and caramelized, resulting in a flavorful and slightly crispy dish. It is often served with roti or rice.