* In English, there are several variations of the spelling of the word, including yogurt, yoghurt,
* yoghourt, yogourt, yaghourt, yahourth, yoghurd, joghourt, and jogourt.
* In the United Kingdom and Australia, yogurt and yoghurt are both current, yoghurt being more common while yogurt is used by the Australian and British dairy councils, and yoghourt is an uncommon alternative.
* In the United States, yogurt is the usual spelling and yoghurt a minor variant.
* In New Zealand, yoghurt is preferred by the New Zealand Oxford Dictionary.
* In Canada, yogurt is most common among English speakers, but many brands use yogourt, since it is an acceptable spelling in both English and French, the official languages of Canada.
Whatever the spelling, the word is usually pronounced with a short o (/ˈjɒɡət/) in the UK, with a long o (/ˈjoʊɡərt/) in North America, Australia, Ireland and South Africa, and with either a long or short o in New Zealand.
Bacterial Cultures * The main (starter) cultures in yogurt are Lactobacillus bulgaricus andStreptococcus thermophilus. The function of the starter cultures is to ferment lactose (milk sugar) to produce lactic acid. The increase in lactic acid decreases pH and causes the milk to clot, or form the soft gel that is characteristic of yogurt. The fermentation of lactose also produces the flavor compounds that are characteristic of yogurt. Lactobacillus bulgaricus andStreptococcus thermophilus are the only 2 cultures required by law (CFR) to be present in yogurt.