simmer cooking definition
Meatball Soup simmering on a stove. Simmering is a food preparation technique in which foods are cooked in hot liquids kept just below the boiling point of water (which is 100 Â°C or 212 Â°F at average sea level air pressure), but higher than poaching temperature.eatball Soup simmering on a stove. Simmering is a food preparation technique in which foods are cooked in hot liquids kept just below the boiling point of water (which is 100 Â°C or 212 Â°F at average sea level air pressure), but higher than poaching temperature.