Toast: Trim away crusts from frozen bread. Cut each frozen slice into 64 tiny cubes. In a large skillet, heat 2 tablespoons olive oil. Add the garlic, peeled and bruised, but whole. When oil is hot, add bread cubes; toast, shaking pan, until golden, 1-2 minutes. Scoop the tiny croutons onto a paper towel; set aside. Toss golden garlic into the blender.
Soak: Tear remaining bread into a bowl. Cover with cold water. Let soak, 5 minutes. Squeeze bread; toss it in the blender.