The manna is a typical local product of the Italian island, with a characteristic sweet taste. It is basically crystallised lymph extracted from the trunks of a rare variety of ash tree. This very particular kind of food is certified by the Italian Minister of Agriculture and Forests as a traditional agricultural food product. The manna has a quite large variety of properties: it is a bland laxative and it is used for beauty purposes, lessening wrinkles and smoothing the skin; it is also effective against cough with his emollient action. The manna is particularly used in pastry with its low levels of sugars which allow its consumption as a sweetener for diabetic people. Because of its rarity, it can cost several hundreds of euros per kilogram: the price for a product (and the profession behind it) which appears to be almost completely disappeared.