A pretzel (German: Brezel) is a baked snack that is traditionally twisted into a unique knot-like shape, which according to some people is meant to resemble two hands folded for prayer. The pretzel dough is made from wheat flour and yeast. Prior to baking, it is dipped into "Natronlauge" (German: sodium lye, sodium hydroxide solution (NaOH) or sodium carbonate solution (Na2CO3)) and sprinkled with coarse salt. During baking, a Maillard reaction then gives the pretzel its characteristic brown color and distinctive flavor. In Bavaria it is obligatory in a WeiĆwurst breakfast.