Sauté
To cook food quickly in a small amount of fat over medium-high to high heat, stirring or moving frequently. From the French "sauter" — to jump. Food should move in the pan, not sit still.
Score
To cut shallow lines or crosshatch patterns into the surface of meat, fish, or bread. Controls expansion during cooking, helps marinades penetrate, and allows fat to render from skin.
Sear
To cook the surface of food at high heat until deeply browned, forming a crust. Creates flavor through the Maillard reaction. Done in a very hot, dry or lightly oiled pan. Not to "seal in juices" — that's a myth. The crust is the point.
Season
To add salt and other seasonings to improve flavor. Also: to build up a protective coating on cast iron by heating oil into the surface. "Season to taste" means taste as you go and adjust until it's right.
Simmer
To cook liquid at just below a boil — small bubbles breaking the surface gently, around 185–205°F. More controlled than boiling. Used for soups, braises, and sauces that need time without agitation.
Steam
To cook food suspended above (not in) boiling water, using the rising steam to cook it. Preserves moisture, nutrients, and delicate texture. Requires a steamer basket or trivet.
Steep
To soak an ingredient in hot liquid off the heat to extract flavor — like tea leaves, spices, or herbs. Distinct from infusing in that no active heat is maintained.
Sweat
To cook vegetables in a small amount of fat over low to medium heat until soft and translucent, without browning. The goal is softness and flavor release, not color.