A comprehensive guide to developing unique glaze effects from natural and sustainable sources. Making your own glazes is a fascinating and rewarding process, even more so when making them from collected ingredients. With little equipment and following a few basic principles, it is possible to harvest glaze ingredients from your local environment, such as clay, subsoil, plants and seashells, to achieve beautiful results in the kiln. Whether you wish to make an entire glaze using collected materials, or just want to use them as additions to existing base recipes, Miranda Forrest teaches you how to source and prepare natural ingredients, from degraded rocks to seaweed, and gives you step-by-step instructions for mixing a glaze, testing samples and finally applying glazes and firing your work. Contributions from contemporary ceramicists who use natural glaze ingredients give you a detailed insight into their working methods and intriguing results. Encouraging experimentation and a creative approach, Natural Glazes is a vital resource for anyone wishing to work in a more natural and sustainable way to develop unique glaze effects.