This is the second Hungarian wine I've had, with the first being a "Bulls Blood" mix as well. And you've got to love this explanation of the name:
During the siege, the citizens of Eger opened their wine cellars and drank red wine to give them strength to fight off the Turks. The wine spilled over their beards and onto their armour, colouring them blood red. As the citizens continued their valiant fight against the invading Turks, word spread quickly that the Hungarians were drinking the blood of bulls to make themselves strong and fierce.