Heat ½ cup oil in a heavy-duty pot (large enough to hold all the ingredients), then sauté the onions and garlic to a light brown. Add turkey and sauté for 10–12 minutes.
While the onions, garlic and turkey are sautéing, combine the curry powder, cardamom, black pepper and cinnamon sticks with ¼ cup oil and blend well.
Combine the cornstarch and broth and add to the turkey mixture. Add the raisins and blend well. Bring to a boil and simmer for 20–25 minutes.