Bread unpredictable since the steam is not produced until the bread is baked. Steam leavening happens regardless of the raising agents (baking soda, yeast, baking powder, sour dough, beaten egg white) included in the mix. The leavening agent either contains air bubbles or generates carbon dioxide. The heat vaporises the water from the inner surface of the bubbles within the dough. The steam expands and makes the bread rise. This is the main factor in the rising of bread once it has been put in the oven. CO generation, on its own, is too small to account for the rise. Heat
Finnish bread sweetened with sugar and spiced with cinnamon. Finnish bread In Finland, bread is a very important food, served with almost every meal with many different types produced domestically. In the Swedish-speaking region of Åland, there are other varieties of bread, the majority of which owe much to Swedish cuisine. Rye bread (Ruisleipä or hapanleipä (lit. "sour bread") in Finnish) is a dark, sour bread produced in quantity in Finland, where it is the most popular type of bread. Compared with the more internationally popular German style, Finnish rye-breads tend to be less oily or moist in texture. The most common