Pastry bag users who do not have a dishwashing machine may prefer to use disposable bags, and thus avoid hand-washing messy bags.[4] Disposable bags are ready-made in inexpensive plastic. A plastic food storage bag is also commonly used as a pastry bag. For small quantities and fine piping, a pastry bag can be made by rolling cooking parchment or wax paper into a cone, filling it, folding the wide end several times to close it, and then cutting the tip into whatever shape is desired.