Asparagus are usually found on sale at the beginning of spring, first the violet variety originating from the Italian Riviera and then the green and white ones from Bassano del grappa. All asparagus have a delicate flavour and, once the tough woody end part has been removed, are both tender and succulent, especially the larger ones. Asparagus are rich in fiber and also contain vitamins A, B1, B6 and C, folic acid, amminoacids, carotenoids and mineral salts such as calcium, phosphorous and potassium; on account of being a low calorie food they are highly recommended in weight-reducing diets. Asparagus are also famous for their purifying and diuretic properties.