Boiling vs. Simmering — What's the Difference?

Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere. At sea level the boiling point of water is 100 °C or 212 °F but at higher altitudes it drops to correspond with decreasing atmospheric pressures.

Simmering is a food preparation technique by which foods are cooked in hot liquids kept just below the boiling point of water (lower than 100 °C or 212 °F) and above poaching temperature (higher than 71–80 °C or 160-180 °F). To create a steady simmer, a liquid is brought to a boil, then its heat source is reduced to a lower, constant temperature.

Heated to or past the boiling point

To be cooked gently or remain just at or below the boiling point.

Very angry or upset; seething.

To be filled with pent-up emotion

Used as an intensive

To be in a state of mild agitation or turmoil

Present participle of boil

To develop in a slow or unexcited way

The process of changing the state of a substance from liquid to gas by heating it to its boiling point.

Present participle of simmer

(uncountable) An animation style with constantly changing wavy outlines, giving a shimmering or wobbling appearance.

The act of something that simmers.

That boils or boil.

Cooking in a boiling liquid

Of a thing: extremely hot or active.

Of a person: feeling uncomfortably hot.

Of the weather: very hot.

(of adjectives associated with heat) Extremely

Heated to the point of bubbling; heaving with bubbles; in tumultuous agitation, as boiling liquid; surging; seething; swelling with heat, ardor, or passion.

The act of ebullition or of tumultuous agitation.

Exposure to the action of a hot liquid.

The application of heat to change something from a liquid to a gas

Cooking in a boiling liquid

Extremely;