Unripe cranberries have a very sour taste and they are not easy to chew. The sugar content in them is low. In most cases, these berries can’t be eaten until they’re a little older and dry.
There are lots of people who think that unripe cranberries cannot be eaten and that they are not good for consumption. There is no scientific evidence to support the claim that it is not safe to eat unripe cranberries. Eating them at this point can cause stomach upset.