The artful technique of extruding a velvety and supple amalgamation, such as frosting or creamed potatoes, into ornate forms. This procedure entails depositing the mixture into a pastry bag crafted from either paper or fabric, subsequently exerting pressure to propel it through a distinct metal nozzle. A plethora of diverse shapes and sizes are available, allowing for the creation of intricate patterns. Piping serves as a captivating means of embellishing cakes, confections, petits fours, and even appetizers, enhancing their visual allure. Even the simplest employment of piping bestows an air of professionalism upon an otherwise unassuming dish.