yoghurt -

Yoghurt is a fermented dairy product made from milk that has been curdled and thickened by specific lactic acid bacteria, primarily Lactobacillus bulgaricus and Streptococcus thermophilus. Originating in the Balkans and the broader Fertile Crescent region, yoghurt is characterized by its tangy flavor, smooth creamy texture, and variable fat content depending on the milk source (cow, goat, sheep, buffalo, or camel).

The fermentation process acidifies the milk, causing casein proteins to denature and form a gel-like matrix that traps water and fat globules. Yoghurt varies significantly by region: Greek yoghurt is strained to a thick consistency with higher protein content; Icelandic skyr is even thicker; Balkan yoghurt maintains a pourable texture; and Middle Eastern and Indian preparations often incorporate different bacterial cultures and production methods. The characteristic tangy flavor comes from lactic acid production, while the texture ranges from liquid to spoonable to spreadable depending on fermentation duration and straining.

Yoghurt functions as both an ingredient and a condiment across Mediterranean, Middle Eastern, South Asian, and Northern European cuisines. It serves as a base for marinades and dressings (notably in tzatziki and raita), a baking ingredient for achieving moisture and acidity in cakes and biscuits, a cooking medium in curries and meat preparations, and a finishing element for soups and grain dishes. In Middle Eastern and Indian cooking, yoghurt is essential for tenderizing meats and adding richness to sauces. It is also consumed plain as a breakfast item, often paired with fruit, granola, or honey, and features prominently in frozen desserts and beverages such as lassi.