Confit.

What it is. A protein or aromatic fully submerged in fat and held at a low temperature for hours. Duck legs in duck fat. Garlic in olive oil. Tomatoes in oil. Fish in butter. The low heat + fat immersion prevent browning and preserve moisture; the result is silken, deeply flavored, and shelf-stable under the fat for weeks.

Why It Works — The Science

Fat conducts heat more gently than water or dry oven. 200–220°F oil won't trigger Maillard or boil off moisture. Proteins cook to tenderness without drying; aromatics concentrate without burning. The fat itself takes on the flavor of what was cooked in it and can be re-used indefinitely.

How To Execute

• Salt the protein dry 12–24h ahead. A dry-cure pulls moisture, concentrates flavor, and sets the seasoning deep before any fat touches it.
• Submerge fully in fat. Duck fat, olive oil, butter, rendered pork fat — the fat must cover every surface. Anything above the line will dry or oxidize.
• Hold 200–220°F. Low oven or stovetop on the lowest flame. A thermometer in the fat is the only honest way to know.
• Cook 1.5–3h depending on size. Garlic goes soft in 45 minutes. Duck legs want 2.5–3 hours. Done is fork-tender, not a clock.
• Cool in fat, store in fat. The fat seals the surface and locks out air. Weeks in the fridge under a proper cap of fat.
• Before service: sear hard for crust. Pull from the fat, pat dry, and hit a screaming pan skin-down. Confit is tender; the sear is the contrast.
• Always reserve the fat. Strained and stored, it becomes gold — roasted potatoes, the next confit, the base of a vinaigrette.

Failure Modes

• Oil too hot. Proteins tighten, fat foams, flavor carbonizes. You've made a braise in oil, not a confit.
• Not fully submerged. Exposed portions dry or oxidize — the protein cooks in two textures and neither is right.
• Contaminated fat. Unstrained, or water pooled at the bottom from the protein's moisture. Spoils faster, tastes off. Strain through a fine mesh before storage.
• No final sear on duck. Flabby skin. Confit without the sear at the end is half the dish.

Where It Shows Up

Duck confit is the classical French expression — salted legs, duck fat, low oven, finished with a hard skin-side sear. Garlic confit is a foundation move: soft cloves and garlic-infused oil that become the base for countless sauces, pastas, and spreads. Tomato confit concentrates sweetness for salads, pastas, and fish plates. Fish confit — slow-cooked salmon or cod in butter or oil — is the modern extension of the same logic: low fat, low heat, silken result.