overfermenting

Verb

overferment (third-person singular simple present overferments, present participle overfermenting, simple past and past participle overfermented)

1. (ambitransitive) To ferment for too long; allow or exhibit too much fermentation.
   • Care must be taken not to overferment the berries, as this will spoil the quality of the coffee.1939, Manila (Philippines). University of the Philippines. College of agriculture, A Handbook of Philippine Agriculture, page 101