soy milk

Does anyone know why warmed soy milk would curdle when added to any hot liquid? I used it twice before in soup and it curdled but now it is doing it in coffee and tea and hot cereal etc I've used it for years. Hasn't done this before. It looks horrid but tastes the same.:serious:

hello everyone I have been vegetarian for a year and a half but I'm trying to be vegan, sometimes I've bought cheese or milk from soy but the soy milk make me feel bad :( so I need help

Hi guys, last year I made a short video on how to make soy milk! Have a look and hope you like it! Best Jenny