To make Teriyaki Triple Garlic Beef: Heat oven to 300°F. With sharp knife, cut several slits in each roast; stuff slits with slivered garlic. Rub roasts with granulated garlic and place in hotel pan; pour teriyaki sauce over roasts. Cover tightly with aluminum foil. Roast in oven 2 1/2 hours or until beef is tender, turning roasts over after 1 hour. Remove roasts from pan. Skim off fat from drippings; reserve drippings in pan. Let roasts stand 30 minutes to cool; carve against the grain into thin slices. Return slices to pan; cover and hold at 165°F in food warmer for service.
To make Garlic Oil: Combine oil and garlic; refrigerate, cover. Note: To avoid food poisoning, make garlic oil daily and keep refrigerated below 41°F at all times. Discard any unused oil; do not mix old and new batches.
For each serving, to order: Arrange 4 ounces beef on bottom half of 1 roll. Ladle 2 tablespoons pan drippings over beef; top with 2 slices cheese. Brush top half of roll with 1 tablespoon garlic oil. Place both halves of sandwich under salamander; heat until cheese is melted and roll top is golden brown. Place 2 slices tomato on top of cheese, close sandwich. Garnish with 1 pickle spear.