How to Confit Foods: Temperature and Timing

The principle of confit

Unlike frying, confit uses fat at 80–120 °C, below the boiling point of water. Gentle heat breaks down collagen in meats, softens fibers, and in duck allows fat to penetrate without burning the exterior.

Fat acts as both cooking medium and barrier against oxygen. Traditionally, confit also preserved food before refrigeration.

Reference temperatures and times

Exact temperature depends on the food, but patience is common to all.

Use a thermometer and note what works in your oven or cooktop; the vessel's heat retention can shift a few degrees.

• Duck or chicken: 85–90 °C, 2–3 hours until meat pulls apart.
• Garlic: 85 °C, 1.5–2 hours until creamy.
• Cherry tomatoes: 100–110 °C, 1–2 hours until slightly collapsed.
• Salmon or bonito: 60–65 °C, 20–40 minutes for silky texture.

Choice of fat and vessel

Duck confit uses its own rendered fat; for garlic or vegetables, mild olive or sunflower oil. Use a narrow pot where food is almost covered with minimal extra fat.

A kitchen thermometer or temperature-controlled oven helps maintain stability. On ceramic cooktops, a heat diffuser avoids hot spots that burn the base.

• Duck fat: duck and goose.
• Mild olive oil: garlic, tomatoes, vegetables.
• Narrow pot: less fat, better coverage.

Storage and reuse

After cooking, let cool in the fat. To preserve, place food in a jar, cover completely with filtered fat, and refrigerate. Duck confit lasts up to two weeks; garlic several weeks.

To serve, remove the piece from fat and brown in a pan or oven to restore crisp skin. Leftover fat is excellent for roast potatoes or soffritto: save its flavor.