Blood as food cabidela is also made by cooking chicken or rabbit in its own blood, sometimes diluted with vinegar. In Spain, the "morcilla" sausage is a kind of black pudding mainly made with pig blood, with spices, fat, and sometimes vegetables. In Andalusia "sangre encebollada" and Valencian "sang amb ceba "are popular dishes made with chicken or pork solidified blood and onion. In Sweden, the blood soup svartsoppa, made with goose blood, is traditionally eaten on the eve of Saint Martin, especially in the southern region of Skåne. Other popular dishes, with blood as one of the ingredients include blodpudding (black pudding],
Superfood may develop an "impaired, one-sided diet". Berries remain under research and do not have evidence of providing any health benefits different from other fresh fruits. Specifically, blueberries are not especially nutrient dense (a superfood characteristic); they have moderate content of only three essential nutrients: vitamin C, vitamin K, and manganese. In 2007, the "superfoods" category was forecast to become a billion dollar global industry by 2011, with several thousand new superfruit products expected to enter the marketplace. According to Datamonitor, superfruit product launches grew at a rate of 67% (2007–2008), but underwent significant category erosion beginning in 2011, when introductions