The Difference Between Sautéing and Sweating
Sautéing means cooking something quickly over high heat with a little fat, so its outside browns and picks up colour. Sweating, on the other hand, is done over lower heat and lets an ingredient — onion especially — soften and release its liquid without browning; it is usually the first step in a soup or sauce base.
Covering the pot briefly while sweating onions helps them soften faster in their own steam, but keeping the lid on too long traps moisture and makes them watery.
Practical Tip
Overcrowding the pot makes it harder for steam to escape and turns sautéing into something closer to boiling; cooking in batches gives better colour.
Boiling vs Simmering
Boiling means the water's surface is constantly breaking with big bubbles at close to 100°C — used for pasta and boiled eggs. Simmering is gentler, with small bubbles appearing now and then, at roughly 85-95°C; most soups, sauces and stews cook at this temperature.
Stew meat cooked at a hard boil turns tough, because high heat tightens the proteins fast; the same meat simmered for hours softens and falls apart. Patience is the ingredient a pot needs most.
A rolling boil looks fast, but it does not always give the best result. A gentle simmer is the patient method that softens an ingredient's fibres over time.
Scraping the Pot (Deglazing)
The browned bits left at the bottom of the pot after searing meat — the fond — carry real flavour and should not be thrown away. Adding a little liquid (wine, stock or water) and scraping the bottom with a spoon loosens those bits into a rich base for a sauce; this technique is called deglazing.
The pot should still be hot when you add the liquid for deglazing; once it has cooled, the stuck bits will not lift off and just harden further.
Order Matters in Stews and Long-Cooked Dishes
In a stew, the meat is seared first and set aside, then onion and garlic are sweated in the same pot; this order stops the meat toughening too early and lets the fond mix into the vegetables. The meat then goes back in with liquid, and the pot is covered and left over low heat for a long stretch.
Stewing beef usually reaches fork-tender in 1.5-2.5 hours over a gentle simmer; keeping the heat low and waiting gives a far more reliable result than trying to cut the time short.
Choose the Right Pot Size
A pot too large for the amount of food lets liquid evaporate faster than it should; one too small crowds the ingredients so they do not cook evenly. Pick a pot that comfortably holds the ingredients without leaving a lot of empty space.