Proziaki Proziaki Proziaki, soda bread - flour-based rolls with added sodium bicarbonate ("proza") originating from Subcarpathia in south-eastern Poland, also common in other parts of the country. Proziaki are produced by the use of wheat flour or wheat-secale flour, eggs, sour smietana (sour cream), water, salt and a maximum of one table spoon of sodium bicarbonate, baked on traditional tile-based cookers, heated by firewood. Proziaki can be circular shaped (diameter of 6-10 cm, thickness of around 1.5 cm) or quadrilateral. Presently, most proziaki are baked on an oven pan with a small amount of fat or lard ("smalec"). Sweet variants can
Sodium bicarbonate Sodium bicarbonate Sodium bicarbonate (IUPAC name: sodium hydrogen carbonate), commonly known as baking soda, is a chemical compound with the formula NaHCO. It is a salt composed of a sodium cation (Na) and a bicarbonate anion (HCO). Sodium bicarbonate is a white solid that is crystalline, but often appears as a fine powder. It has a slightly salty, alkaline taste resembling that of washing soda (sodium carbonate). The natural mineral form is nahcolite. It is a component of the mineral natron and is found dissolved in many mineral springs. Because it has long been known and is widely used, the