Do Bitter Coffee Lovers Have Darker Personalities?

If you find yourself reaching for extra-dark roasts or sipping unsweetened black coffee every morning, you’re not alone—but new research suggests your taste for bitterness might say more about your personality than you think.

In short: yes. Studies show people who strongly prefer bitter flavors—like black coffee, tonic water, or unsweetened cocoa—are significantly more likely to exhibit traits linked to narcissism, Machiavellianism, and everyday sadism.

The Bitter Taste–Dark Personality Link

Psychologists at the University of Innsbruck in Austria conducted two separate experiments involving a total of 1,000 participants to explore whether a preference for bitter foods and drinks correlates with certain personality traits. Their findings, published in the journal Appetite, provide some of the first empirical evidence linking a taste for bitterness with what researchers call “the dark triad” of personality traits, plus everyday sadism.

What the Experiments Found

In the first experiment, 500 men and women were shown a list of 60 different foods and beverages equally divided among sweet (e.g., chocolate cake), salty (e.g., bacon), sour (e.g., vinegar), and bitter (e.g., radish, black coffee, tonic water). They rated each item from 1 (“strongly dislike”) to 6 (“like very much”).

Participants also completed four personality questionnaires:

• One measured general aggression (“If I am provoked enough, I will hit someone”).
• Another assessed tendencies associated with the “dark triad”: Machiavellianism (manipulativeness), narcissism (vanity, self-centeredness), and psychopathy (emotional coldness, lack of empathy).
• A third evaluated the “Big Five” personality traits: extraversion, agreeableness, conscientiousness, neuroticism, and openness.
• The fourth measured “everyday sadism,” including enjoyment derived from others’ discomfort—such as finding pleasure in tormenting or humiliating others.

A second experiment with 450 additional participants confirmed these results. Across both studies, a strong preference for bitter flavors consistently correlated with higher scores in narcissism, Machiavellianism, psychopathy, and everyday sadism.

Why Bitterness Appeals to Darker Minds

The researchers didn’t pinpoint exactly why people with these traits gravitate toward bitter tastes, but they offered a compelling hypothesis. Christina Sagioglou, one of the study authors, suggested that bitter flavors might trigger a kind of “thrill” akin to riding a rollercoaster—where fear or discomfort is part of the enjoyment.

“Everyday sadism is related to benign masochism—the enjoyment of painful or unpleasant experiences that we know are not truly dangerous,” she explained, citing psychologist Paul Rozin. “The pleasure may come from the fact that the body signals rejection, but the person knows there is no real danger.”

Bitterness, which in nature often signals toxicity, is typically disliked by most people. Yet those with more hostile or self-centered personality profiles may derive a kind of perverse pleasure from consuming it—akin to enjoying the rush of something mildly threatening or socially taboo.

Interestingly, the trait of agreeableness—which includes qualities like compassion, cooperation, and kindness—showed a strong negative correlation with bitter taste preferences. In other words, the nicer you are, the less likely you are to enjoy bitter flavors.

Frequently Asked Questions

Do all bitter foods show the same link to dark personality traits?

Yes. The studies included a range of bitter items—such as black coffee, unsweetened cocoa, radishes, and tonic water—and found that overall preference for bitter flavors, not just one specific item, correlated with higher levels of narcissism, Machiavellianism, and everyday sadism.

Does liking bitter coffee mean I have a dark personality?

Not necessarily. The study shows a statistical correlation, not a definitive diagnosis. Many people enjoy bitter coffee without exhibiting any dark triad traits. But if you have a very strong preference for bitterness across many foods and drinks, the research suggests you may score higher on measures of narcissism, manipulativeness, and sadism.

What are the 'dark triad' personality traits?

The dark triad refers to three personality traits: narcissism (excessive self-focus and vanity), Machiavellianism (strategic manipulation and exploitation of others), and psychopathy (low empathy and emotional coldness). Everyday sadism, which involves taking pleasure in others’ discomfort, is often considered a related fourth trait.

Are people who like bitter tastes more aggressive?

The study found that a strong preference for bitterness was associated with higher reported aggression levels, especially in situations where individuals felt provoked. However, the main traits linked to bitter taste preference were narcissism, Machiavellianism, and everyday sadism.

Why might someone enjoy bitter foods if they’re unpleasant?

Researchers suggest that some people—particularly those with darker personality traits—may experience a kind of thrill or pleasure from bitter tastes due to their association with risk or mild disgust. This aligns with the concept of ‘benign masochism,’ where people enjoy experiences that are technically unpleasant but ultimately safe.

Recommended FrontStreet Beans for Dark Roast Lovers

If you’re drawn to bold, bitter profiles, try FrontStreet Coffee’s PWN Golden Mandheling for deep chocolate and tobacco notes, or their Classic Blend for a balanced yet intense roast character with hints of dark cherry and caramel. For something heavier, their Lintong Mandheling delivers earthy, spicy tones with a long, dry finish. All are available as whole beans ideal for dark roasting styles. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.