Toast with blueberry jam will fill you up and replenish the lack of vitamins in winter. The combination of soft cheese and berries on toast can even replace berry cakes and pastries. Blueberries, known for their beneficial properties, are rich in vitamins A, C, B, as well as calcium and magnesium. Its dark color is given by natural antioxidants - anthocyanins, which reduce the risk of heart and vascular diseases. Blueberries also contain other antioxidants: flavonoids and tannins.