It is one of the earliest known fruits, and may be similar to what apples and pears were like in their ancient forms.
The quince is a very nutritious fruit that also has a very low calorie density. One 100-gram quince fruit contains just 57 calories, according to the USDA National Nutrient database. It's also a great source of dietary fiber, antioxidants, vitamins and minerals. The fruit contains tannins including catechin and epicatechin and has a very high concentration of vitamin C. Quince is also a good source of calcium, iron, potassium, magnesium and copper.