To prepare the yogurt, they mix different powder milk products with milk and cream, for low fat yogurt they use fat free milk and skipped cream
Once they blended the ingredients, they heat them to 80oC or higher for just half of minute
That's all the time that needed to pasteurize the mixture. But while it's now bacteria -- free, there's another problem, milk and cream naturally separate because cream is lighter due to it's fast content
So on to the next step, homogenization, lending the milk and cream together
The homogenizer piston crashes the fast globules, this enables the two liquids to merge. The mixture then goes into fermentation tank, heated to 45oC.
Workers pour in a packet of live bacteria from a factory that breeds bacteria culture for dairy industry
Fementation takes 6 to 20 hours depending on style of yogurt. The factory manufactures the yogurt containers right on the packaging line, using plastic sheets and paper lables
The yogurt is then cooled and can be flavoured with fruit, sugar, other sweeteners or flavourings. Stabilizers, such as gelatin, may also be added.