Preheat oven to 400 degrees F. Toss cauliflower with 3 tablespoons olive oil, and half of the minced turmeric. Season with salt and pepper. Roast until browned, about 20 minutes.
In the meantime, mix together all lamb köfte ingredients (except olive oil). Form oblong balls, 1 to 1½ inches long.
Heat 2 tablespoons olive oil in a sauté pan over medium-high heat. Add meatballs and cook until browned and cooked through, 8 to 10 minutes. Remove from heat and set aside.
To finish the bulgar, add 1 tablespoon olive oil to the sauté pan over medium heat. Add onions and cook for 5 minutes. Add bulgur, ginger, currants, salt, pepper, and the rest of the turmeric. Turn up the heat to medium-high and sauté for another 4 to 5 minutes. Serve bulgur and cauliflower with the lamb köfte.