Pastry bag
（重定向自Pastry bags）
![An inexpensive pastry bag, with an inner ring insert and a variety of plastic tips that screw onto the ring.](/Images/godic/202502/01/Plastic_pastry_bag2814.JPG")
![Piping dacquoise meringue disks onto a baking sheet.](/Images/godic/202502/01/Dacquoise_disks_for_mousse_cake_bases2815.jpg")
A pastry bag (or piping bag in the Commonwealth) is an often cone- or triangular-shaped, hand-held bag made from cloth, paper, or plastic that is used to pipe semi-solid foods by pressing them through a narrow opening at one end, for many purposes including cake decoration. It is filled through a wider opening at the opposite end, rolled or twisted closed, and then squeezed to extrude its contents.