Ketika susu nabati seperti [[susu kedelai]] ditambahkan ke kopi, kadang-kadang bisa terjadi pendadihan. Untuk membantu mencegah hal ini produsen terkadang menambahkan pengatur keasaman.<ref>{{Cite journal|last=Brown|first=Mairi|last2=Laitano|first2=Francesca|last3=Williams|first3=Calum|last4=Gibson|first4=Bruce|last5=Haw|first5=Mark|last6=Sefcik|first6=Jan|last7=Johnston|first7=Karen|date=1 October 2019|title='Curdling' of soymilk in coffee: A study of the phase behaviour of soymilk coffee mixtures|url=https://strathprints.strath.ac.uk/67572/8/Brown_etal_FH_2019_Curdling_of_soymilk_in_coffee_a_study_of_the_phase_behaviour.pdf|journal=Food Hydrocolloids|volume=95|pages=462–467|doi=10.1016/j.foodhyd.2019.04.032}}</ref>
