We are facing one problem at our milk plant. We are manufacturing Sterlized Flavoured milk and after 5 to 6 days of filling bottles some gel type formation happed in whole batch. But its not repeating in every batch like 2 or 3 batch found with gel formation (Like lumps ) among 50 batches. if we are shaking those bottles properly again it comes is proper texture.
What may be the possible cause please let me know......