Abstract: An adjustable spiral slitter for hot dogs which includes a pair of generally semi-cylindrical or semi-circular members hingedly connected at one end and adjustably connected at the other end with the adjustably connected ends being separable to enable the semi-circular members to be pivoted between an open and closed position. One of the semi-circular members includes a serrated blade mounted therein with the serrated edge of the blade being oriented in an inclined relation to the center axis of the semi-circular members when they are in closed position. The semi-circular members, when in closed position, form an annular member with the blade edge generally parelling and spaced laterally from a diameter of the annular member extending between the pivotal connection and the adjustable connection between the two semi-circular members.