Biscuit dough is the mixture of ingredients that is used for making biscuits. The dough is made of plain flour, butter and eggs. All the ingredients are kneaded together into dough. Most commonly, as sweet biscuits are prepared, sugar is mostly included in the dough. For salty or savory biscuits, the dough is made without sugar. Even sugar-free sweet dough may be made with the use of sugar substitutes. The basic biscuit dough may be enhanced with cocoa powder, fruits, nut or chocolate for making biscuits of different varieties.