OTC contains a mixture of lactic ferments thermophilic and mesophilic homo fermentation (Streptococcus thermophilus, Lactococcus lactis subsp lactis and cremoris) leading to acidification efficient, reliable and controllable. Rapid acidification. OTC does not produce CO2 and can be used in combination with other lactic cultures. To be used in rotation with OTC 5 culture. 1U sachet per 100 liters of milk.