Abstract: A coupler for dispensing, e.g., icing, from a squeezable bag, wherein the icing is twisted as it is dispensed. The coupler may attach between an icing bag nozzle and an icing dispensing tip, wherein members of the coupler are rotatable relative to one another, e.g., via a user's fingers or thumb. Alternatively, the coupler may include a modified icing bag nozzle as one of its members. The coupler may be used for twisting extrusions of other extrudable substances, e.g., chocolate mousse, etc.