This salad is especially nice served with broiled or grilled fish, such as black or striped bass.
In a medium bowl, whisk together yogurt, ginger, chile, and oil; season with salt and pepper. Using a Microplane, finely grate garlic into a small bowl; measure 1/4 teaspoon and stir into yogurt mixture. Spread yogurt mixture on a platter; top with tomatoes. Season with salt and pepper, drizzle generously with oil, and sprinkle with herbs; serve.