01 - Set the oven to 400°F and allow it to fully preheat.
02 - Arrange the potato wedges evenly in a large roasting pan.
03 - In a mixing bowl, thoroughly whisk together olive oil, lemon juice, minced garlic, broth, oregano, salt, black pepper, and turmeric if using.
04 - Pour the marinade over the potatoes, tossing well to ensure even coating. Position the wedges mostly flat, cut side down.
05 - Roast the potatoes uncovered for 40 minutes.
06 - Remove the pan from the oven, gently turn the potatoes, and spoon pan juices over them.
07 - Return to the oven and continue roasting for 30 to 35 minutes, until golden brown with crisp edges and fork-tender centers.
08 - For additional crispiness, set the oven to broil for 3 to 5 minutes, observing closely to avoid burning.
09 - Transfer the potatoes to a serving platter. Garnish with chopped fresh parsley and lemon slices. Serve immediately while hot.