But Why: A Podcast for Curious Kids

Why do some people like spicy food?

Jun 27, 2025
Join chef and author Kenji López-Alt, known for his kids' book Every Night is Pizza Night, as he spices up the conversation about why some people crave fiery foods while others can't handle the heat. Discover how capsaicin works on our bodies and why your tolerance for spice may change over time. Kenji also shares the secrets behind the crunch of pickles and the science of fermentation, all while encouraging kids to explore the joy of cooking and cultural connections through food.
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INSIGHT

Complexity of Taste Perception

  • Taste involves more than just taste buds on the tongue; it includes our nose, eyes, ears, and mouth sensations.
  • Our brain integrates all sensory input to decide whether food tastes good or not, influenced by mood and personal experience.
ANECDOTE

Music Changes Chocolate Taste

  • Kenji did an experiment with 1,000 people tasting chocolate with different music backgrounds.
  • Participants found chocolate tastier and sweeter with happy music despite tasting the same piece twice.
INSIGHT

Why Spicy Food Burns

  • Spiciness is caused by capsaicin, which tricks pain receptors on the tongue into feeling heat.
  • People develop tolerance over time, explaining differences in spiciness preference and tolerance.
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