Sear / Saisir

To sear (French: saisir, 'to seize') is to expose a protein — meat, fish, poultry, or tofu — to a very high, dry-heat surface with the deliberate goal of triggering the Maillard reaction: the cascade of chemical interactions between amino acids and reducing sugars that occurs above approximately 140–165°C (285–330°F) and produces hundreds of new flavour and aroma compounds alongside the characteristic brown crust. A true sear requires three conditions: a very hot pan (cast iron, carbon steel, or stainless steel retain heat best); a dry protein surface (surface moisture must evaporate before browning can begin — pat the protein completely dry before seasoning); and minimal movement (the protein must be left undisturbed long enough to release naturally from the pan before it is turned, or the crust tears). The pan temperature should be high enough that a drop of water skates and evaporates immediately — the Leidenfrost point. Oil with a high smoke point (refined avocado, grapeseed, or clarified butter) is added just before the protein to prevent sticking and distribute heat evenly across any surface irregularities. A sear is not a means of 'sealing in juices' — that myth, traceable to Justus von Liebig (1847), was definitively disproven by food scientist Harold McGee. Searing contributes flavour and texture, not moisture retention. In French kitchen language, 'saisir' is the verb and implies the first violent contact with heat; subsequent cooking may continue via roasting, braising, or resting.

“She dried the duck breast, scored the fat cap, and pressed it skin-down into a cold pan — then raised the heat so the fat rendered slowly before the final hard sear turned the skin to lacquered mahogany.”

• ConceptMaillard Reaction
• TechniquePan Sauce
• TechniqueFond

1. 1.On Food and Cooking: The Science and Lore of the Kitchen — Harold McGee
2. 2.The Food Lab — J. Kenji López-Alt
3. 3.Le Guide Culinaire — Auguste Escoffier (1903)
4. 4.Modernist Cuisine — Nathan Myhrvold et al.

Confidence: high