Where to start? There are plenty of interesting compounds in food out there :)
Just pulling examples on previous graphics on the site, there’s:
- The compound in asparagus that makes some people’s urine smell odd.
- The compound in nutmeg that acts as a hallucinogen.
- The compound in chocolate that’s toxic to dogs in relatively low doses.
- The compound in onions that makes your eyes water.
You could also look at miraculin, the compound found in miracle berries that acts on your tastebuds to make sour foods such as lemons taste sweet.