Simmering and boiling both involve cooking in water or liquid, but the difference in temperature and intensity makes a big impact on your food.
Boiling is vigorous and occurs at 100°C (212°F). Bubbles rise rapidly and break the surface constantly. It’s ideal for pasta, potatoes, or sterilising. But for delicate foods, boiling is too harsh—it can break apart vegetables or toughen meat.
Simmering happens just below boiling, around 85–95°C (185–203°F). Bubbles are smaller and gentler. It’s perfect for soups, sauces, poaching, and braising. Simmering allows flavours to meld and proteins to cook evenly without becoming rubbery.
In fact, many classic dishes rely on simmering—not boiling—to build depth. A stew simmered for hours will develop richness, while one boiled may become cloudy or dry.
The key is temperature control. Bring your liquid to a boil, then reduce the heat until only a few bubbles break the surface. That’s a simmer.
Understanding this difference ensures tenderness, clarity, and balanced flavour—the hallmarks of careful cooking.