I use mainly a mid-temperature stoneware clay which I fire in an electric kiln. The pottery is usually made on a pottery wheel or occasionally hand built. It is dishwasher and microwave safe, and has a food safe glaze. Mid temperature firings give a good glaze and color response that is quite vivid. In an electric kiln, the heating elements surround the work. Most pottery is glazed so that it has a fairly consistent look on all sides.
By using different glazing techniques and selectively applying unusual glazes you can get some added interest in the glazing of the finished pot.
I like to add a spruce ash-based glaze which has an unpredictable behavior and can give some incredible, unique pottery.