For the tamarind and tomato the sauce: In a medium-sized enameled cast-iron braiser, heat the oil over low heat, and sauté the onions and garlic for 20 to 30 minutes until golden brown.
Add the salt, pepper, turmeric, cinnamon, cardamom, and advieh, and sauté for 1 minute. Add the tomato paste, tamarind paste, and raisins, and sauté for another 1 min