The spelling of "yeast cake" is made up of two words: yeast and cake. The first syllable of yeast is pronounced as /jiːst/ with a long "e" sound and the second syllable is pronounced as /st/. The phonetic transcription for the word cake is /keɪk/, with the "a" sound pronounced as a diphthong. When combined, "yeast cake" is pronounced as /jiːst keɪk/. This term refers to a cake made with yeast as a leavening agent, resulting in a fluffy and airy texture.
A yeast cake refers to a compressed block or cube-shaped substance made of yeast that is commonly used as a leavening agent in baking. It is primarily composed of live yeast microorganisms, such as Saccharomyces cerevisiae, which are known for their ability to produce carbon dioxide gas when mixed with flour, water, and sugar – a process called fermentation. This gas production helps dough rise and gives baked goods a light and airy texture.
Yeast cakes are typically sold in pre-measured portions, typically weighing around 0.6 ounces (18 grams), making them convenient for home baking. They are often found in the refrigerated or frozen section of grocery stores to maintain their freshness and prolong their shelf life.
To use a yeast cake, it is crumbled or dissolved in warm water to activate the yeast. The mixture is typically combined with flour, sugar, and other ingredients to form a dough, which is then left to rise in a warm environment. The yeast cake's microorganisms feed on the sugars, releasing carbon dioxide gas that creates air pockets throughout the dough, resulting in a light, fluffy, and well-risen final product.
Yeast cakes are commonly used in a variety of baked goods such as bread, rolls, buns, pastries, and cakes. They are highly valued for their ability to provide excellent rising properties and their unique flavor profile, which adds a characteristic yeasty or bread-like taste.
The word "yeast" can be traced back to the Old English term "gist" or "yest", which ultimately derives from the Proto-Germanic word "jestaz". This original root denotes "foam" or "yeast".
The term "cake" comes from the Old Norse word "kaka", which refers to a baked confection. It has cognates in several Germanic languages.
When combined, "yeast" and "cake" describe a specifically baked confection that contains yeast as an essential ingredient.