MIXED — Adding salt to water is commonly believed to make it reach a boiling point faster during cooking, But Not Fully

Analysis summary

While salt lowers water's heat capacity (making it heat up faster), it also raises the boiling point, resulting in a negligible time difference for typical cooking amounts.

Evidence profile

Key findings

• Adding salt increases the boiling point of water (boiling point elevation), meaning the water must reach a higher temperature to boil.
• Saltwater has a lower specific heat capacity than pure water, which allows it to absorb heat and rise in temperature more quickly.
• For typical cooking amounts (e.g., a teaspoon of salt per liter), these two physical effects largely cancel each other out, resulting in a negligible time difference of only a few seconds.

Citations