What is a star bakery tool?

A star bakery tool, often referred to as a star tip or star piping nozzle, is a pastry decorating tool used to create star-shaped designs on cakes, cookies, and other baked goods. It features a star-shaped opening that allows frosting or icing to be piped in a variety of decorative patterns, including rosettes and borders. These tools are commonly used in cake decorating to add texture and visual appeal to desserts.