Scrape gills of mushroom out with a spoon and cut into thick slices.
In a large bowl, combine the mushrooms, fennel, peppers, eggplant, asparagus, whole scallions and onions and toss with the Jamaican Jerk Wing Sauce (SJ3397HA).
On a clean, hot seasoned grill, grill the vegetables over moderately high heat, turning, until tender and charred.