Otsinge
Otsinge is a traditional Estonian fermented dairy product, similar to yogurt or kefir. It is made by fermenting milk, typically cow's milk, with a starter culture of lactic acid bacteria. The fermentation process causes the milk to thicken and develop a characteristic sour taste. Historically, otsinge was a common way to preserve milk and make it more digestible.
The production of otsinge usually involves warming the milk to a specific temperature, then adding the starter
While less common in modern commercial production, otsinge remains a part of Estonian culinary heritage. It