For the Plain Gingerbread, mix all ingredients together, knead into a dough and let rest overnight at room temperature. On a floured work surface or between two baking mats, roll out the gingerbread 3 mm thick and cut out any shapes (do not use too much flour).
Brush with milk or egg and bake at 165 to 175°C for 10 to 12 minutes until light brown. Remove from oven and while still hot, brush or brush with gingerbread glaze if desired (gingerbread gets a shiny finish). After the pastry has cooled, decorate the Simple Gingerbread with chocolate, egg white or sugar icing.