Abstract: A flat blade is mounted on a handle and has upper and lower edges. The lower edge consists of a pair of cutting edges leading upwardly from a central point at an angle to each other and the upper edge consists of a pair of stepping edges leading downwardly from each other from a central point. The stepping edges are substantially parallel to the opposite cutting edge. The cutting edges have scallop-type serrations formed by defining edges extending substantially at ninety degrees to each other.