I usually grate and chop my own veggies for lentil soup but I picked up a bag of soup mix yesterday and have added it to my cooked lentils. I added stock and left it to simmer. It's gone a dark red colour. Never had this before. It's usually a light orangey colour. I've googled it but not really managed to find and answer.
Has this ever happened to anyone and is this soup safe to eat or should I chuck it out?