Flashed glass is a technique used in stained glass creation where a thin layer of colored glass is applied over a clear or differently colored piece of glass, allowing for intricate designs and details to be carved or etched into the surface. This method enhances the depth and richness of color while also providing the artist with greater flexibility in their design process. The use of flashed glass is particularly important in creating detailed imagery and vibrant hues, making it a key component in the art of stained glass.