the.com/spiciness
a chemical bluff that tricks your tongue into screaming fire when nothing is burning
fake heatCapsaicin triggers pain receptors, not real temperature change
birds immuneBirds feel no burn, so peppers recruit them to spread seeds
measured inScoville units, scaled by sugar-water dilution tasting
milk fixCasein in dairy washes capsaicin off pain receptors
natural defensePlants evolved heat to deter hungry mammals