Traditionally, rose hips are valued for their scent and flavor, which is somewhat similar in taste to cranberries. Rosehip liquid extract is made by slow-simmering the hips in water to yield a concentrate. Rosehips contain high levels of vitamin C. However, some rosehip preparations, including liquid extracts, may vary considerably in their vitamin C content depending on how they are processed. Other nutrients found in rosehips include vitamins D, E and K, as well as several B vitamins.