If you like your coffee black rather than all milky, foamy and syrupy then many will say you’re simply drinking it as it’s meant to be drunk.
However, if you have a fondness for the bitter tipple then it could be a sign that you’re a psychopath, according to research.
Scientists studying taste buds have found parallels between the consumption of some of our favourite drinks like bitter IPAs, black coffee and tonic water and malevolent personality traits.
So you might want to be wary if you’ve got a friend or partner who shuns milk and sugar in their cup of Joe.
The study , published in the journal Appetite, surveyed 1,000 people and was was conducted at the University of Innsbruck in Austria.
Participants ranked different foods on a six-point scale, and were then subjected to a test identifying their personality traits.
Authors Christina Sagioglou and Tobias Greitemeyer found that the more a consumer enjoyed bitter flavours, the darker their personality traits.
They write that: “The present research has demonstrated that bitter taste preferences are associated with more pronounced malevolent personality traits, especially robustly with everyday sadism.
They add: “… In preferring bitter tasting foods more than less sadistic people, everyday sadists may perceive them as positive due to their potential to cause distaste, that is, to cause a negative experience in other people.”
This is not the first time research has found a link between taste and personality.