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 carbonate (CO) per sodium IS in sodium bicarbonate (NaHCO) as in sodium carbonate (NaCO). The modern chemical formulas of these compounds express their precise chemical compositions (which were unknown when the names sodium carbonate and sodium bicarbonate were coined) and show the same ratio the other way around: half as much sodium percarbonate is in NaHCO as in NaCO (disodium carbonate). In cooking, baking soda is primarily used in baking as a leavening agent. When it reacts with acid, carbon dioxide is released, which causes expansion of the batter and forms the characteristic texture and grain in pancakes, cakes, quick