Which cooking technique requires little fat and high heat?

Sautéing is a cooking technique that involves cooking food quickly in a small amount of fat over relatively high heat. This method is designed to brown the food, enhancing its flavor through the Maillard reaction while also retaining moisture and tenderness. The high heat helps achieve a nice sear on proteins and caramelization on vegetables, contributing to depth of flavor.

In contrast, poaching and steaming use water or liquid to gently cook food and require little to no fat, but they do not utilize high heat. Braising combines both wet and dry cooking methods, typically starting with high heat followed by a low and slow cooking process with the addition of liquid, which means it doesn't fit the definition of using high heat with minimal fat throughout the entire cooking process. Sautéing stands out as the method that meets both criteria of requiring little fat and employing high heat for effective cooking.