Cranberries are commonly found in US and Cananda around thanksgiving. It has a bright red colour and a sharp sour taste. It is mainly used to make juice, jams and pickles. It is not commonly found in India. These days frozen berries are available in supermarkets.
There is another berry commonly found in India known as Karonda, also known as Kalakai or Bengal Currant or Christ's thorn. It is lighter in colour and is a different berry. Although both are used to make pickles and tastes sour, they are not to be confused. Karonda is native to India whereas Cranberries are native to US and Canada. Below I have attached a picture of both cranberries and karonda. This will help see the difference. Having said that I would also like to mention that all recipes given below can be made using either cranberries or karonda.
Recipes With Cranberries