-Ann Bieri From The Manufacturer Form Follows Function: The copper that creates its extraordinary presence is also what gives Cop-R-Chef its extraordinary performance. The heavy-gauge copper outer layer produces unparalleled evenness of heat, allowing precise control for delicate recipes. Cop-R-Chef is a gleaming example of All-Clad artisanship. Depending upon your preference, Cop-R-Chef can be polished to a high luster, or allowed to naturally antique for a more traditional appearance. Cop-R-Chef is an ideal choice for professional chefs and gourmet cooks who desire supreme control and a classic copper aesthetic. Cop-R-Chef Technical Details: In addition to its ideal thermal conductivity, Cop-R-Chef's heavy-gauge copper outer layer disperses heat laterally across the bottom surface, as well as vertically along the sidewalls of the cookware. The pure aluminum center core further enhances heat distribution, and the 18/10 stainless-steel interior creates the ideal cooking surface. All-Clad Cop-R-Chef Care and Use: Before using for the first time, wash in hot, soapy water with a sponge or dishcloth. Rinse in hot water and dry thoroughly. Preheating: Most recipes recommend placing All-Clad pots on low heat for one or two minutes before adding foods. To fry without natural fats, try: Add oil, butter, or margarine to the vessel; just enough to cover the bottom surface. Heat pot or pan for one to two minutes over low or medium heat. Add food for frying. If sticking is a problem, check the following: Is your stove level? Is your pot clean? Is your heat set too high? If so, a low to medium heat setting is recommended for optimal cooking performance. Salt Damage: To avoid the formation of small white dots or pits, bring liquids to a boil before adding salt, then stir well. Or, add salt after food has started to cook. Pitting does not interfere with cooking performance but can diminish the beauty of the stainless steel. Prevent Water Spotting: After washing, rinse in hot water and dry immediately. Discoloration: Overheating can cause brown or blue stains. Food films, if not removed, will cause discoloration on the pot when it is reheated. Large amounts of iron content in your water may cause your pot to look rusty. Cleaning: To clean the stainless-steel interior, immerse the pot in warm water. Then, use a fine powder cleanser with water to form a paste. Apply paste using a soft cloth and rub in a circular motion from the center outward. Rinse in hot, soapy water, and dry immediately. Do not use oven cleaners or cleansers with chlorine bleach. Do not use steel wool. To clean the copper exterior, use a commercial copper cleaner to remove any tarnish or darkening. Rub in a circular motion. Rinse in lukewarm water. All-Clad does not recommend washing in a dishwasher, as harsh detergents will darken the copper. All-Clad Cookware Lifetime Warranty: From the date of purchase, All-Clad guarantees to repair or replace any item found defective in material, construction, or workmanship under normal use and following the care instructions. This excludes damage from misuse or abuse. Minor imperfections and slight color variations are normal.