Deep-frying is a cooking method where food is submerged in hot oil. This technique rapidly cooks food, creating a crispy exterior and moist interior due to the Maillard reaction and caramelization. The key to successful deep-frying lies in maintaining a consistent oil temperature, typically between 350°F and 375°F (175°C and 190°C). Too low a temperature results in greasy food as it absorbs too much oil, while too high a temperature burns the exterior before the inside is cooked. Proper oil selection is also crucial; oils with high smoke points like peanut, canola, or vegetable oil are preferred. Food should be dried thoroughly before frying to prevent dangerous splattering. Basket or spider strainers are used to lower and remove food safely. Common deep-fried foods include french fries, doughnuts, fried chicken, and tempura. While delicious, deep-fried foods are typically high in fat and calories, so moderation is advised. Proper oil disposal and equipment cleaning are essential for safety and hygiene.