 The species involved in the fermentation depends on the temperature and humidity of the environment, and may include "Lactococcus lactis", "Streptococcus diacetylactis", "Streptococcus cremoris", "Lactobacillus delbrueckii subsp.bulgaricus" and "Streptococcus thermophilus".Dahi starter is sometimes made with dried red chillies (or their stems) in hot milk.