Sear, Braise, Roast, or Saute: Choosing the Right Cooking Method

The decision happens before the pan
Two identical chicken thighs take two different paths: one seared hot and fast, one braised low and slow. Neither technique is better. The cook who knows which path a cut deserves is the one who ends up with a great dinner, while the cook who braises everything or sears everything ends up with food that is merely cooked.
All cooking methods fall into three families: dry heat (grilling, roasting, sauteing, frying), moist heat (poaching, steaming, simmering), and combination methods that use both, of which braising is the famous example. Each family suits different ingredients for reasons rooted in muscle, moisture, and time.
Dry heat: for tender and small

Dry heat methods use hot air, hot metal, or hot fat with little or no water. They brown, and browning is where hundreds of new flavor compounds come from. Dry heat is the right call for naturally tender cuts of meat, most fish, young vegetables, and anything thin enough to cook through before the outside overcooks: steaks, chops, chicken breasts, asparagus, scallops.
The keys are a hot enough surface, a dry ingredient, and the patience not to crowd the pan. Food steams instead of browns when the pan cools too far, and gray steamed protein is the flavor tax of a full pan.
Moist heat: for gentle and forgiving

Moist heat cooks with water, steam, or stock at moderate temperatures, never above a simmer. It is the method for delicate foods that dry heat would toughen or dry out: poached eggs and fish, custards, greens, and anything where tenderness matters more than a crust. A gentle poach at a bare simmer is one of the most underrated skills in the kitchen.
Moist heat is also the great tenderizer for tough, collagen-rich cuts, but those need time as much as moisture, which brings us to the third family.
Combination methods: braise and baste

Braising sears first, then simmers low and slow in a small amount of liquid. The sear builds the browned flavor base, the long moist cooking then melts collagen into gelatin, converting a tough, cheap cut into the fork-tender center of short ribs, carnitas, and pot roast. The braising liquid becomes the sauce, carrying the flavor of the sear back into the meat.
The same logic powers confit (gentle cooking in fat), stewing, and any slow-cooked dish. It is the most economical method in the kitchen: its best subjects are the least expensive cuts, and its product is luxury food.
A simple matching rule
Tender and quick-cooking: dry heat, hot and fast. Delicate: moist heat, gentle and low. Tough and cheap: combination, browned then slow. Vegetables follow the same logic, thin and tender ones take to searing and high roasts, dense ones take to steaming, braising, or a long roast that caramelizes their sugars.
Cooking is easy once the method matches the ingredient. Most disappointing dinners are not bad recipes, they are good recipes matched to the wrong method. Learn the three families and the matching rule, and you stop needing recipes to tell you what to do with what you found at the store.