Heat a gas grill to medium-high or the coals in a charcoal grill to medium-hot.
Grill bread slices 1 minute per side, until toasted.
Rub one side of each slice with garlic, lightly brush with olive oil and sprinkle with a pinch of sea salt.
On each bruschetta, place a basil leaf, a slice of cheese and a tomato slice. Drizzle with balsamic vinegar and sprinkle with additional sea salt, if