Most self-heating beverages use to generate heat:
Self-heating drinks are innovative beverages that use built-in technology to reach an ideal drinking temperature without a microwave or stove. They are primarily used by hikers, commuters, and emergency responders who need hot coffee, tea, or cocoa on the go. How They Work
: When you press the bottom of the container or twist a mechanism, a seal breaks, allowing the water and heating agent to mix.
Several brands currently offer ready-to-drink options or kits:
: The can or pouch has two separate compartments. One holds the drink, while the other contains a heating agent (like calcium oxide, also known as quicklime) and a separate capsule of water.
: This reaction typically raises the temperature of the beverage by about 42°C (roughly 75°F) in under 3 minutes . Best Self-Heating Drinks You Can Buy