Use roasted lemon juice in place of fresh squeezed lemon juice to give your recipe a jump in flavor intensity.
Preheat broiler. Place lemons, cut side up, in a small, non-aluminum baking dish and sprinkle with salt and pepper. Roast, about 6 inches below the heat, until very soft, about 20 minutes. The tops will darken and caramelize. Let cool in the baking dish.