Miso-Glazed Eggplant

Preheat broiler.

Whisk together shiro miso, vinegar, water, sugar, and ginger until sugar is dissolved.

Brush a large shallow baking pan with oil and arrange eggplant, cut sides up, in pan. Brush tops with 2 tablespoons oil (total). Broil eggplant 4 to 6 inches from heat until it begins to turn pale golden and soften, 4 to 5 minutes. Brush generously with miso mixture and broil 2 minutes more. Brush eggplant with miso again and rotate pan 180 degrees (do not turn eggplant over), then continue to broil until eggplant is tender and glaze is golden brown, 2 to 3 minutes. Serve sprinkled with scallions.