Le Creuset cast iron cookware can be used on all heat sources. As a general rule, always match the pan's base size to the stovetop heat zone size. This prevents overheating of the pan and sides and potential damage to the handles. Gas flames should never extend beyond the base area to the sidewalls of the pan as this can case damage. Also for safety reasons, make sure that longer handles are positioned safely over the cook top and do not hang over the front of the stove. Handles and knobs will become hot during cooking, always use a thick cloth or oven mitts when lifting.
Medium and low heat will provide the best results for almost any type of cooking, this includes frying and searing. Many people believe that higher heat is required for searing however the trick is to pre-heat the pan before you begin.
High heat temperatures should only be used to boil water or for reducing stocks and sauces. A pan should never be pre-heated over high heat. Cast iron retains heat so well this will cause your food to burn.
With the exception of grill pans, the enamel surface of Le Creuset cast iron cookware is not ideal for dry cooking. Your choice of oil, butter, or fat should completely cover the base of the ban before heating begins. Do not preheat a pan without and liquid as this can cause damage to the enamel. For deep frying, the oil level should not exceed one third full. This allows for sufficient height for the oil to rise once you add food to cook. When frying keep a lid close by to use in the case of overheating or flaring.
Silicone, wood, and heat resistant plastic tools are recommended for stirring. Metal can be used but pay special attention not to scrape over the enamel surface. Hand-held electric or battery-operated mixers and beaters can also damage the enamel so these should not be used. Remove all food from the pans to cut them with knives and then replace if needed.
When serving from your Le Creuset cookware make sure to always place hot items on a trivet, wood board or silicone mat. Hot cast iron placed on unprotected surfaces can leave burns and stains.
For use in the oven note that the black phenolic lid knobs on Le Crueset Signature cookware are heat-resistant to 480°F (250°C). The black phenolic lid knobs on Le Creuset Classic cast iron cookware are heat-resistant to 375°F (190°C). Pieces that feature integral cast iron handles or stainless steel knobs can be used at any oven temperature. Any pans with a wooden handle or knob must not be placed in the oven.
Do not place any cookware on the floors of ovens with cast iron linings. This will increase the cooking temperature inside the oven, resulting in an increased cooking rate with detrimental effects on food. Do not drag cookware across the floor of the liners. For best results always place on a shelf or rack.