Lately, I have tried to work with store bought pasturized goats milk *with calcium chloride snd a dan of lipase). I was planning on making a thermophilic hard cheese but for each of the 3 batches, I have had the exact same problem. Everything goes well for the first stages, until I tried to cook the curds. Despite following the directions very carefully, slowly raising the temperature, stirring every few minutes... the curds stayed too moist. They would not get even slightly dry/rubbery/squeeky. Eventually, I decided to ladel the curds into moulds and let them press under about 10 pounds overnight. Morning revealed something resembling a slightly grainy cream cheese. Just out of curiosity I tried heating a little bit in very hot water as per mozzarella. Not surprisingly, that didn't work and just gave me warm soggy cream cheese.
It tastes goodvand I will use it like cream cheese but, WHY IS THIS HAPPENING ? Is it the milk ? My rennet is getting a bit old. I get a clesn break but could it be the rennet ? Suggestions welcome !