Proziaki be produced with the addition of sugar. In numerous Subcarpathian villages the proziaki bakes are diversified by adding buttermilk, cottage cheese or more butter. Traditionally, prozianki are served with fresh butter, cottage cheese or marmalade. The consummation of proziaki is frequently followed by sweet milk. 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,
Buttermilk with the rising agent, sodium bicarbonate, to produce carbon dioxide which acts as the leavening agent. Buttermilk is also used in marination, especially of chicken and pork, whereby the lactic acid helps to tenderize, retain moisture, and allows added flavors to permeate throughout the meat. Originally, buttermilk referred to the liquid left over from churning butter from cultured or fermented cream. Traditionally, before the Advent of homogenization, the milk was left to sit for a period of time to allow the cream and milk to separate. During this time, naturally occurring lactic acid-producing bacteria in the milk fermented it. This