Metal cookware

Metal pots are generally made from a narrow range of metals. This is because pots and pans need to conduct heat well, but also need to be chemically unreactive so that they do not alter the flavor of the food. Most materials that are conductive enough to heat evenly are too reactive to use in food preparation. In some cases (copper pots, for example), a pot may be made out of a more reactive metal, and then tinned or clad with another.

Aluminum is a lightweight metal with very good thermal conductance. It does not rust, and is resistant to many forms of corrosion. Aluminum can however react with some acidic foods to change the taste of the food. Sauces containing egg yolks, or vegetables such as asparagus or artichokes may cause oxidation of non-anodized aluminum. Since 1965 circumstantial evidence has linked Alzheimer's disease to aluminum, but to date there is no proof that the element is involved in causing the disease. Aluminum is commonly available in sheet, cast, or anodized forms.

Cast iron cookware is slow to heat, but once at temperature provides even heating. Cast iron can also withstand very high temperatures. Being a reactive material, cast iron can have chemical reactions with high acid foods such as wine or tomatoes. In addition, spinach cooked on bare cast iron will turn black.

Cast iron is a porous material and requires seasoning before use. Seasoning creates a thin layer of fat and carbon over the iron that coats the surface and prevents sticking. Although cast iron cookware can be washed with soap, it should not be soaked or left wet.

Stainless steel is an iron alloy containing a minimum of 11.5% chromium. Blends containing 18% chromium with either 8% nickel,called 18/8, or with 10% nickel, called 18/10, are commonly used for kitchen equipment. Stainless steel's virtues are a resistance to corrosion, it does not react with either alkaline or acidic foods, and it is not easily scratched or dented. Stainless steel's drawback for cooking use is that it is a relatively poor heat conductor. As a result, stainless steel cookware is generally made with a metal insert of copper or aluminium in the base to conduct the heat across the base.

Carbon steel cookware can be rolled or hammered into very thin sheets of material, while still maintaining high strength and heat resistance. This allows for rapid and high heating. Carbon steel does not conduct heat as well as other materials, but this may be an advantage for woks and paella pans, where one portion of the pan is intentionally kept at a different temperature than the rest. Like cast iron, carbon steel must be seasoned before use. Carbon steel is often used for woks and crepe pans.

Kitchen Cookware Information Posted By: Blueshoots.com