You can use them to add tart flavour to lots of dishes, both savory and sweet. (thefoodblog.net)
For as long as I can remember, I've been crazy about yogurt, the plain kind, for its pleasant and subtle tart flavour. (golubkakitchen.com)
Raw rhubarb has a very distinct tart flavour, but when baked together with apple and strawberries it all comes together into a well balanced and naturally sweetened delicious mess. (greenkitchenstories.com)