Soba is a noodle made from buckwheat and wheat flour. Later it was mixed with wheat flour. Seitan produced from wheat flour is a longer process. This gluten is found in products such as wheat flour. It is reported to look and taste like wheat flour. Baking quality is determined by rheological properties of wheat flour. It is made by steaming or deep-frying dough made from wheat flour. Rice flour is a common substitute for wheat flour. The consistency is more like corn meal than wheat flour. The basic filling consists of a mixture of sugar, butter, eggs, buttermilk, and wheat flour. Godamba roti is a simple Sri Lankan flatbread usually made from wheat flour. The dough (masa) is identical to that of a wheat flour tortilla. Soba can nutritionally complement other grains like white rice and wheat flour. It therefore has a lower gluten content than wheat flour. Soba contains all eight essential amino acids, including lysine, which is lacking in wheat flour.