Cut the middle portion of the round loaf into 6 long slices, each one almost an inch thick. Cut these slices in half, making half-slices that are roughly 3x3x1 inches.
When fire is ready, place the 12 slices over it in a single layer. Cook, turning once, until the outsides of the bread are golden brown (with grill marks, if possible). This should take about 2 minutes per side-but check frequently to make sure the bread isn't burning.
When the bread slices are done, rub the edges of each one, on both sides, with a cut clove of garlic-lightly or heavily, depending on your garlic preference. Place the slices on a large platter in a single layer. Sprinkle each slice with 2 teaspoons of olive oil, breaking the surface of the bread lightly with a spoon to let the oil soak in. Season with salt and pepper. Turn the slices over and repeat the procedure. Let the slices sit in the olive oil for 10-15 minutes. Serve as is for simple bruschetta.