6 tablespoons extra-virgin olive oil
1 pound mild green peppers, such as cubanelles or Anaheims, stemmed, seeded and coarsely chopped
1 tablespoon pul biber pepper (Aleppo pepper)
1 large onion, coarsely chopped
Salt and freshly ground black pepper
2 pounds ground beef
3/4 cup canola oil, plus more for brushing
5 large eggs
1 cup milk
One 16-ounce package yufka dough
2 tablespoons nigella sativa (black cumin seeds)