Saoirse Ronan has revealed she wasn't impressed with the taste of screen blood.
The Irish actress gets to sink her teeth into the gooey concoction for her portrayal of vampire Eleanor in Neil Jordan's Byzantium.
"It's made out of food colouring, corn syrup and a bucket of sugar and I could taste some mint as well - just in case we do some kissing scenes later. It's not nice!" admitted the 19-year-old.
However, Saoirse found the blood-sucking scenes "beautiful". Unlike her mother Clara, played by Gemma Arterton, Eleanor is compassionate with her prey, choosing the elderly, ill and dying.
"Everyone I kill is above 80 and most of them are in a hospital so it was kind of peculiar. But it's really quite beautiful and quite eerie. In a way, Eleanor is like an angel and kills out of mercy," she said.
Given the hype surrounding vampires and the mammoth success of the Twilight films, it's understandable why the actress had her doubts about taking a role in Byzantium.
"To be honest, before I read the script I was a bit worried it was going to be just another vampire [film] because it is still such a trend," she said.
"Just because Twilight was doing so well, suddenly everyone was doing vampire films. And then I read the script and saw it's not really a vampire film. It's certainly more about this mother-daughter relationship and how they're stuck in limbo."
Saoirse also liked that women take centre stage in a world more usually dominated by men: "That is always very appealing to an actress. This story has two lead characters, both female, and that is the first attraction. The fact that they are the violent ones makes it more interesting."
:: Byzantium opens in cinemas on May 31.