A tagine is a conical cooking device used in Moroccan cooking, unique in that the top allows the condensation created by cooking to fall evenly back over the food. Tagines come in different styles and use.   Some tagines are strictly for serving, and not meant to be heated or used for cooking at all. Many are clay versions, which can be used in the oven. Some clay pots allow limited stove-top use.  Then there are those with bases that can be heated on top of the stove allowing you to brown and cook from beginning to end.