Cut 1/4-inch slice off top and bottom of each onion
and discard. Cut onions in half crosswise. Arrange
onions in single layer in shallow dish. Whisk
Worcestershire, vinegar, soy sauce and oil in bowl.
Pour over onions and let stand at room temperature 1
hour, basting occasionally.
Prepare barbecue (medium-high heat). Arrange onions
on grill. Cover grill and cook onions until brown,
basting occasionally, about 4 minutes per side. Using
large spatula, transfer onions to platter. Season with
pepper.
