Ice cream feels cold because the melting process absorbs heat from the surrounding mouth tissue.

The longer version

Melting is an endothermic change: breaking the ordered structure of ice requires energy, and a melting solid pulls that energy from whatever it touches. When a frozen dessert melts against the tongue, heat flows out of the tissue and into the dessert, and the temperature drop is registered by nerve endings as coldness.

Dissolved sugar lowers the freezing point, so the product begins melting below the temperature of pure ice, which intensifies the sensation. Fat and air bubbles slow the transfer somewhat, giving the texture its characteristic smoothness rather than the sharp bite of a plain ice cube. The same physics makes a melting cube feel cold long before it disappears.

Where this entry sits

Everyday ingredients turn out to be full of quiet chemistry and long history. This collection gathers short, plain explanations of how bread rises, why onions sting, where common spices originate, and how coffee, tea, and chocolate reached the modern kitchen. The full list sits on the Food and Drink page, where every entry is listed in order.