Deeply score cut sides of potatoes, using a sharp knife. Cover skin
side with foil. Combine remaining ingredients; brush cut sides with
margarine mixture. Grill potatoes, cut side up, 5 to 6" from medium
coals 40 minutes, basting with margarine mixture every 10 minutes.
Turn potatoes & grill 10 minutes. Turn potatoes & baste with
remaining margarine mixture. Grill 10 minutes.