Piping bag

Piping bag refers to a flexible cone, disposable or reusable, fitted at its tip with an interchangeable nozzle, used to pipe creams, meringues, batters and purees with precision. The choice of nozzle, plain, fluted or specialty, determines the resulting shape and decoration. It is used to fill choux and eclairs, to pipe evenly sized macarons, and to create rosettes and decorative borders.